drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         dma_addr_t mapaddr;
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_MAX,
 206 };
 207
 208 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 209 #define ROCKER_N_INTERNAL_VLANS         255
 210 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 212
 213 struct rocker_port {
 214         struct net_device *dev;
 215         struct net_device *bridge_dev;
 216         struct rocker *rocker;
 217         unsigned int port_number;
 218         u32 pport;
 219         __be16 internal_vlan_id;
 220         int stp_state;
 221         u32 brport_flags;
 222         bool ctrls[ROCKER_CTRL_MAX];
 223         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 224         struct napi_struct napi_tx;
 225         struct napi_struct napi_rx;
 226         struct rocker_dma_ring_info tx_ring;
 227         struct rocker_dma_ring_info rx_ring;
 228         struct list_head trans_mem;
 229 };
 230
 231 struct rocker {
 232         struct pci_dev *pdev;
 233         u8 __iomem *hw_addr;
 234         struct msix_entry *msix_entries;
 235         unsigned int port_count;
 236         struct rocker_port **ports;
 237         struct {
 238                 u64 id;
 239         } hw;
 240         spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
 241         struct rocker_dma_ring_info cmd_ring;
 242         struct rocker_dma_ring_info event_ring;
 243         DECLARE_HASHTABLE(flow_tbl, 16);
 244         spinlock_t flow_tbl_lock;               /* for flow tbl accesses */
 245         u64 flow_tbl_next_cookie;
 246         DECLARE_HASHTABLE(group_tbl, 16);
 247         spinlock_t group_tbl_lock;              /* for group tbl accesses */
 248         DECLARE_HASHTABLE(fdb_tbl, 16);
 249         spinlock_t fdb_tbl_lock;                /* for fdb tbl accesses */
 250         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 251         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 252         spinlock_t internal_vlan_tbl_lock;      /* for vlan tbl accesses */
 253         DECLARE_HASHTABLE(neigh_tbl, 16);
 254         spinlock_t neigh_tbl_lock;              /* for neigh tbl accesses */
 255         u32 neigh_tbl_next_index;
 256 };
 257
 258 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 259 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 260 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 261 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 262 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 263 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 264 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 265 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 266 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 267
 268 /* Rocker priority levels for flow table entries.  Higher
 269  * priority match takes precedence over lower priority match.
 270  */
 271
 272 enum {
 273         ROCKER_PRIORITY_UNKNOWN = 0,
 274         ROCKER_PRIORITY_IG_PORT = 1,
 275         ROCKER_PRIORITY_VLAN = 1,
 276         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 277         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 278         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 279         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 280         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 281         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 282         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 283         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 284         ROCKER_PRIORITY_ACL_CTRL = 3,
 285         ROCKER_PRIORITY_ACL_NORMAL = 2,
 286         ROCKER_PRIORITY_ACL_DFLT = 1,
 287 };
 288
 289 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 290 {
 291         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 292         u16 end = 0xffe;
 293         u16 _vlan_id = ntohs(vlan_id);
 294
 295         return (_vlan_id >= start && _vlan_id <= end);
 296 }
 297
 298 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
 299                                       u16 vid, bool *pop_vlan)
 300 {
 301         __be16 vlan_id;
 302
 303         if (pop_vlan)
 304                 *pop_vlan = false;
 305         vlan_id = htons(vid);
 306         if (!vlan_id) {
 307                 vlan_id = rocker_port->internal_vlan_id;
 308                 if (pop_vlan)
 309                         *pop_vlan = true;
 310         }
 311
 312         return vlan_id;
 313 }
 314
 315 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
 316                                    __be16 vlan_id)
 317 {
 318         if (rocker_vlan_id_is_internal(vlan_id))
 319                 return 0;
 320
 321         return ntohs(vlan_id);
 322 }
 323
 324 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
 325 {
 326         return !!rocker_port->bridge_dev;
 327 }
 328
 329 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
 330 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
 331 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
 332 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
 333
 334 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 335                                      enum switchdev_trans trans, int flags,
 336                                      size_t size)
 337 {
 338         struct list_head *elem = NULL;
 339         gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
 340                           GFP_ATOMIC : GFP_KERNEL;
 341
 342         /* If in transaction prepare phase, allocate the memory
 343          * and enqueue it on a per-port list.  If in transaction
 344          * commit phase, dequeue the memory from the per-port list
 345          * rather than re-allocating the memory.  The idea is the
 346          * driver code paths for prepare and commit are identical
 347          * so the memory allocated in the prepare phase is the
 348          * memory used in the commit phase.
 349          */
 350
 351         switch (trans) {
 352         case SWITCHDEV_TRANS_PREPARE:
 353                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 354                 if (!elem)
 355                         return NULL;
 356                 list_add_tail(elem, &rocker_port->trans_mem);
 357                 break;
 358         case SWITCHDEV_TRANS_COMMIT:
 359                 BUG_ON(list_empty(&rocker_port->trans_mem));
 360                 elem = rocker_port->trans_mem.next;
 361                 list_del_init(elem);
 362                 break;
 363         case SWITCHDEV_TRANS_NONE:
 364                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 365                 if (elem)
 366                         INIT_LIST_HEAD(elem);
 367                 break;
 368         default:
 369                 break;
 370         }
 371
 372         return elem ? elem + 1 : NULL;
 373 }
 374
 375 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 376                                  enum switchdev_trans trans, int flags,
 377                                  size_t size)
 378 {
 379         return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
 380 }
 381
 382 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 383                                  enum switchdev_trans trans, int flags,
 384                                  size_t n, size_t size)
 385 {
 386         return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
 387 }
 388
 389 static void rocker_port_kfree(enum switchdev_trans trans, const void *mem)
 390 {
 391         struct list_head *elem;
 392
 393         /* Frees are ignored if in transaction prepare phase.  The
 394          * memory remains on the per-port list until freed in the
 395          * commit phase.
 396          */
 397
 398         if (trans == SWITCHDEV_TRANS_PREPARE)
 399                 return;
 400
 401         elem = (struct list_head *)mem - 1;
 402         BUG_ON(!list_empty(elem));
 403         kfree(elem);
 404 }
 405
 406 struct rocker_wait {
 407         wait_queue_head_t wait;
 408         bool done;
 409         bool nowait;
 410 };
 411
 412 static void rocker_wait_reset(struct rocker_wait *wait)
 413 {
 414         wait->done = false;
 415         wait->nowait = false;
 416 }
 417
 418 static void rocker_wait_init(struct rocker_wait *wait)
 419 {
 420         init_waitqueue_head(&wait->wait);
 421         rocker_wait_reset(wait);
 422 }
 423
 424 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 425                                               enum switchdev_trans trans,
 426                                               int flags)
 427 {
 428         struct rocker_wait *wait;
 429
 430         wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
 431         if (!wait)
 432                 return NULL;
 433         rocker_wait_init(wait);
 434         return wait;
 435 }
 436
 437 static void rocker_wait_destroy(enum switchdev_trans trans,
 438                                 struct rocker_wait *wait)
 439 {
 440         rocker_port_kfree(trans, wait);
 441 }
 442
 443 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 444                                       unsigned long timeout)
 445 {
 446         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 447         if (!wait->done)
 448                 return false;
 449         return true;
 450 }
 451
 452 static void rocker_wait_wake_up(struct rocker_wait *wait)
 453 {
 454         wait->done = true;
 455         wake_up(&wait->wait);
 456 }
 457
 458 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
 459 {
 460         return rocker->msix_entries[vector].vector;
 461 }
 462
 463 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
 464 {
 465         return rocker_msix_vector(rocker_port->rocker,
 466                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 467 }
 468
 469 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
 470 {
 471         return rocker_msix_vector(rocker_port->rocker,
 472                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 473 }
 474
 475 #define rocker_write32(rocker, reg, val)        \
 476         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 477 #define rocker_read32(rocker, reg)      \
 478         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 479 #define rocker_write64(rocker, reg, val)        \
 480         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 481 #define rocker_read64(rocker, reg)      \
 482         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 483
 484 /*****************************
 485  * HW basic testing functions
 486  *****************************/
 487
 488 static int rocker_reg_test(const struct rocker *rocker)
 489 {
 490         const struct pci_dev *pdev = rocker->pdev;
 491         u64 test_reg;
 492         u64 rnd;
 493
 494         rnd = prandom_u32();
 495         rnd >>= 1;
 496         rocker_write32(rocker, TEST_REG, rnd);
 497         test_reg = rocker_read32(rocker, TEST_REG);
 498         if (test_reg != rnd * 2) {
 499                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 500                         test_reg, rnd * 2);
 501                 return -EIO;
 502         }
 503
 504         rnd = prandom_u32();
 505         rnd <<= 31;
 506         rnd |= prandom_u32();
 507         rocker_write64(rocker, TEST_REG64, rnd);
 508         test_reg = rocker_read64(rocker, TEST_REG64);
 509         if (test_reg != rnd * 2) {
 510                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 511                         test_reg, rnd * 2);
 512                 return -EIO;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int rocker_dma_test_one(const struct rocker *rocker,
 519                                struct rocker_wait *wait, u32 test_type,
 520                                dma_addr_t dma_handle, const unsigned char *buf,
 521                                const unsigned char *expect, size_t size)
 522 {
 523         const struct pci_dev *pdev = rocker->pdev;
 524         int i;
 525
 526         rocker_wait_reset(wait);
 527         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 528
 529         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 530                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 531                 return -EIO;
 532         }
 533
 534         for (i = 0; i < size; i++) {
 535                 if (buf[i] != expect[i]) {
 536                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 537                                 buf[i], i, expect[i]);
 538                         return -EIO;
 539                 }
 540         }
 541         return 0;
 542 }
 543
 544 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 545 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 546
 547 static int rocker_dma_test_offset(const struct rocker *rocker,
 548                                   struct rocker_wait *wait, int offset)
 549 {
 550         struct pci_dev *pdev = rocker->pdev;
 551         unsigned char *alloc;
 552         unsigned char *buf;
 553         unsigned char *expect;
 554         dma_addr_t dma_handle;
 555         int i;
 556         int err;
 557
 558         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 559                         GFP_KERNEL | GFP_DMA);
 560         if (!alloc)
 561                 return -ENOMEM;
 562         buf = alloc + offset;
 563         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 564
 565         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 566                                     PCI_DMA_BIDIRECTIONAL);
 567         if (pci_dma_mapping_error(pdev, dma_handle)) {
 568                 err = -EIO;
 569                 goto free_alloc;
 570         }
 571
 572         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 573         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 574
 575         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 576         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 577                                   dma_handle, buf, expect,
 578                                   ROCKER_TEST_DMA_BUF_SIZE);
 579         if (err)
 580                 goto unmap;
 581
 582         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 583         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 584                                   dma_handle, buf, expect,
 585                                   ROCKER_TEST_DMA_BUF_SIZE);
 586         if (err)
 587                 goto unmap;
 588
 589         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 590         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 591                 expect[i] = ~buf[i];
 592         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 593                                   dma_handle, buf, expect,
 594                                   ROCKER_TEST_DMA_BUF_SIZE);
 595         if (err)
 596                 goto unmap;
 597
 598 unmap:
 599         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 600                          PCI_DMA_BIDIRECTIONAL);
 601 free_alloc:
 602         kfree(alloc);
 603
 604         return err;
 605 }
 606
 607 static int rocker_dma_test(const struct rocker *rocker,
 608                            struct rocker_wait *wait)
 609 {
 610         int i;
 611         int err;
 612
 613         for (i = 0; i < 8; i++) {
 614                 err = rocker_dma_test_offset(rocker, wait, i);
 615                 if (err)
 616                         return err;
 617         }
 618         return 0;
 619 }
 620
 621 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 622 {
 623         struct rocker_wait *wait = dev_id;
 624
 625         rocker_wait_wake_up(wait);
 626
 627         return IRQ_HANDLED;
 628 }
 629
 630 static int rocker_basic_hw_test(const struct rocker *rocker)
 631 {
 632         const struct pci_dev *pdev = rocker->pdev;
 633         struct rocker_wait wait;
 634         int err;
 635
 636         err = rocker_reg_test(rocker);
 637         if (err) {
 638                 dev_err(&pdev->dev, "reg test failed\n");
 639                 return err;
 640         }
 641
 642         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 643                           rocker_test_irq_handler, 0,
 644                           rocker_driver_name, &wait);
 645         if (err) {
 646                 dev_err(&pdev->dev, "cannot assign test irq\n");
 647                 return err;
 648         }
 649
 650         rocker_wait_init(&wait);
 651         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 652
 653         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 654                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 655                 err = -EIO;
 656                 goto free_irq;
 657         }
 658
 659         err = rocker_dma_test(rocker, &wait);
 660         if (err)
 661                 dev_err(&pdev->dev, "dma test failed\n");
 662
 663 free_irq:
 664         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 665         return err;
 666 }
 667
 668 /******
 669  * TLV
 670  ******/
 671
 672 #define ROCKER_TLV_ALIGNTO 8U
 673 #define ROCKER_TLV_ALIGN(len) \
 674         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 675 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 676
 677 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 678  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 679  * |             Header          | Pad |           Payload           | Pad |
 680  * |      (struct rocker_tlv)    | ing |                             | ing |
 681  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 682  *  <--------------------------- tlv->len -------------------------->
 683  */
 684
 685 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 686                                           int *remaining)
 687 {
 688         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 689
 690         *remaining -= totlen;
 691         return (struct rocker_tlv *) ((char *) tlv + totlen);
 692 }
 693
 694 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 695 {
 696         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 697                tlv->len >= ROCKER_TLV_HDRLEN &&
 698                tlv->len <= remaining;
 699 }
 700
 701 #define rocker_tlv_for_each(pos, head, len, rem)        \
 702         for (pos = head, rem = len;                     \
 703              rocker_tlv_ok(pos, rem);                   \
 704              pos = rocker_tlv_next(pos, &(rem)))
 705
 706 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 707         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 708                             rocker_tlv_len(tlv), rem)
 709
 710 static int rocker_tlv_attr_size(int payload)
 711 {
 712         return ROCKER_TLV_HDRLEN + payload;
 713 }
 714
 715 static int rocker_tlv_total_size(int payload)
 716 {
 717         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 718 }
 719
 720 static int rocker_tlv_padlen(int payload)
 721 {
 722         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 723 }
 724
 725 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 726 {
 727         return tlv->type;
 728 }
 729
 730 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 731 {
 732         return (char *) tlv + ROCKER_TLV_HDRLEN;
 733 }
 734
 735 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 736 {
 737         return tlv->len - ROCKER_TLV_HDRLEN;
 738 }
 739
 740 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 741 {
 742         return *(u8 *) rocker_tlv_data(tlv);
 743 }
 744
 745 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 746 {
 747         return *(u16 *) rocker_tlv_data(tlv);
 748 }
 749
 750 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 751 {
 752         return *(__be16 *) rocker_tlv_data(tlv);
 753 }
 754
 755 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 756 {
 757         return *(u32 *) rocker_tlv_data(tlv);
 758 }
 759
 760 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 761 {
 762         return *(u64 *) rocker_tlv_data(tlv);
 763 }
 764
 765 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
 766                              const char *buf, int buf_len)
 767 {
 768         const struct rocker_tlv *tlv;
 769         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 770         int rem;
 771
 772         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 773
 774         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 775                 u32 type = rocker_tlv_type(tlv);
 776
 777                 if (type > 0 && type <= maxtype)
 778                         tb[type] = tlv;
 779         }
 780 }
 781
 782 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
 783                                     const struct rocker_tlv *tlv)
 784 {
 785         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 786                          rocker_tlv_len(tlv));
 787 }
 788
 789 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
 790                                   const struct rocker_desc_info *desc_info)
 791 {
 792         rocker_tlv_parse(tb, maxtype, desc_info->data,
 793                          desc_info->desc->tlv_size);
 794 }
 795
 796 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 797 {
 798         return (struct rocker_tlv *) ((char *) desc_info->data +
 799                                                desc_info->tlv_size);
 800 }
 801
 802 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 803                           int attrtype, int attrlen, const void *data)
 804 {
 805         int tail_room = desc_info->data_size - desc_info->tlv_size;
 806         int total_size = rocker_tlv_total_size(attrlen);
 807         struct rocker_tlv *tlv;
 808
 809         if (unlikely(tail_room < total_size))
 810                 return -EMSGSIZE;
 811
 812         tlv = rocker_tlv_start(desc_info);
 813         desc_info->tlv_size += total_size;
 814         tlv->type = attrtype;
 815         tlv->len = rocker_tlv_attr_size(attrlen);
 816         memcpy(rocker_tlv_data(tlv), data, attrlen);
 817         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 818         return 0;
 819 }
 820
 821 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 822                              int attrtype, u8 value)
 823 {
 824         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 825 }
 826
 827 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 828                               int attrtype, u16 value)
 829 {
 830         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 831 }
 832
 833 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 834                                int attrtype, __be16 value)
 835 {
 836         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 837 }
 838
 839 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 840                               int attrtype, u32 value)
 841 {
 842         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 843 }
 844
 845 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 846                                int attrtype, __be32 value)
 847 {
 848         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 849 }
 850
 851 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 852                               int attrtype, u64 value)
 853 {
 854         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 855 }
 856
 857 static struct rocker_tlv *
 858 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 859 {
 860         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 861
 862         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 863                 return NULL;
 864
 865         return start;
 866 }
 867
 868 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 869                                 struct rocker_tlv *start)
 870 {
 871         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 872 }
 873
 874 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 875                                    const struct rocker_tlv *start)
 876 {
 877         desc_info->tlv_size = (const char *) start - desc_info->data;
 878 }
 879
 880 /******************************************
 881  * DMA rings and descriptors manipulations
 882  ******************************************/
 883
 884 static u32 __pos_inc(u32 pos, size_t limit)
 885 {
 886         return ++pos == limit ? 0 : pos;
 887 }
 888
 889 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
 890 {
 891         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 892
 893         switch (err) {
 894         case ROCKER_OK:
 895                 return 0;
 896         case -ROCKER_ENOENT:
 897                 return -ENOENT;
 898         case -ROCKER_ENXIO:
 899                 return -ENXIO;
 900         case -ROCKER_ENOMEM:
 901                 return -ENOMEM;
 902         case -ROCKER_EEXIST:
 903                 return -EEXIST;
 904         case -ROCKER_EINVAL:
 905                 return -EINVAL;
 906         case -ROCKER_EMSGSIZE:
 907                 return -EMSGSIZE;
 908         case -ROCKER_ENOTSUP:
 909                 return -EOPNOTSUPP;
 910         case -ROCKER_ENOBUFS:
 911                 return -ENOBUFS;
 912         }
 913
 914         return -EINVAL;
 915 }
 916
 917 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
 918 {
 919         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 920 }
 921
 922 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
 923 {
 924         u32 comp_err = desc_info->desc->comp_err;
 925
 926         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 927 }
 928
 929 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
 930 {
 931         return (void *)(uintptr_t)desc_info->desc->cookie;
 932 }
 933
 934 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
 935                                        void *ptr)
 936 {
 937         desc_info->desc->cookie = (uintptr_t) ptr;
 938 }
 939
 940 static struct rocker_desc_info *
 941 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
 942 {
 943         static struct rocker_desc_info *desc_info;
 944         u32 head = __pos_inc(info->head, info->size);
 945
 946         desc_info = &info->desc_info[info->head];
 947         if (head == info->tail)
 948                 return NULL; /* ring full */
 949         desc_info->tlv_size = 0;
 950         return desc_info;
 951 }
 952
 953 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
 954 {
 955         desc_info->desc->buf_size = desc_info->data_size;
 956         desc_info->desc->tlv_size = desc_info->tlv_size;
 957 }
 958
 959 static void rocker_desc_head_set(const struct rocker *rocker,
 960                                  struct rocker_dma_ring_info *info,
 961                                  const struct rocker_desc_info *desc_info)
 962 {
 963         u32 head = __pos_inc(info->head, info->size);
 964
 965         BUG_ON(head == info->tail);
 966         rocker_desc_commit(desc_info);
 967         info->head = head;
 968         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 969 }
 970
 971 static struct rocker_desc_info *
 972 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 973 {
 974         static struct rocker_desc_info *desc_info;
 975
 976         if (info->tail == info->head)
 977                 return NULL; /* nothing to be done between head and tail */
 978         desc_info = &info->desc_info[info->tail];
 979         if (!rocker_desc_gen(desc_info))
 980                 return NULL; /* gen bit not set, desc is not ready yet */
 981         info->tail = __pos_inc(info->tail, info->size);
 982         desc_info->tlv_size = desc_info->desc->tlv_size;
 983         return desc_info;
 984 }
 985
 986 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
 987                                         const struct rocker_dma_ring_info *info,
 988                                         u32 credits)
 989 {
 990         if (credits)
 991                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 992 }
 993
 994 static unsigned long rocker_dma_ring_size_fix(size_t size)
 995 {
 996         return max(ROCKER_DMA_SIZE_MIN,
 997                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 998 }
 999
1000 static int rocker_dma_ring_create(const struct rocker *rocker,
1001                                   unsigned int type,
1002                                   size_t size,
1003                                   struct rocker_dma_ring_info *info)
1004 {
1005         int i;
1006
1007         BUG_ON(size != rocker_dma_ring_size_fix(size));
1008         info->size = size;
1009         info->type = type;
1010         info->head = 0;
1011         info->tail = 0;
1012         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1013                                   GFP_KERNEL);
1014         if (!info->desc_info)
1015                 return -ENOMEM;
1016
1017         info->desc = pci_alloc_consistent(rocker->pdev,
1018                                           info->size * sizeof(*info->desc),
1019                                           &info->mapaddr);
1020         if (!info->desc) {
1021                 kfree(info->desc_info);
1022                 return -ENOMEM;
1023         }
1024
1025         for (i = 0; i < info->size; i++)
1026                 info->desc_info[i].desc = &info->desc[i];
1027
1028         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1029                        ROCKER_DMA_DESC_CTRL_RESET);
1030         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1031         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1032
1033         return 0;
1034 }
1035
1036 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1037                                     const struct rocker_dma_ring_info *info)
1038 {
1039         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1040
1041         pci_free_consistent(rocker->pdev,
1042                             info->size * sizeof(struct rocker_desc),
1043                             info->desc, info->mapaddr);
1044         kfree(info->desc_info);
1045 }
1046
1047 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1048                                              struct rocker_dma_ring_info *info)
1049 {
1050         int i;
1051
1052         BUG_ON(info->head || info->tail);
1053
1054         /* When ring is consumer, we need to advance head for each desc.
1055          * That tells hw that the desc is ready to be used by it.
1056          */
1057         for (i = 0; i < info->size - 1; i++)
1058                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1059         rocker_desc_commit(&info->desc_info[i]);
1060 }
1061
1062 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1063                                       const struct rocker_dma_ring_info *info,
1064                                       int direction, size_t buf_size)
1065 {
1066         struct pci_dev *pdev = rocker->pdev;
1067         int i;
1068         int err;
1069
1070         for (i = 0; i < info->size; i++) {
1071                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1072                 struct rocker_desc *desc = &info->desc[i];
1073                 dma_addr_t dma_handle;
1074                 char *buf;
1075
1076                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1077                 if (!buf) {
1078                         err = -ENOMEM;
1079                         goto rollback;
1080                 }
1081
1082                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1083                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1084                         kfree(buf);
1085                         err = -EIO;
1086                         goto rollback;
1087                 }
1088
1089                 desc_info->data = buf;
1090                 desc_info->data_size = buf_size;
1091                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1092
1093                 desc->buf_addr = dma_handle;
1094                 desc->buf_size = buf_size;
1095         }
1096         return 0;
1097
1098 rollback:
1099         for (i--; i >= 0; i--) {
1100                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1101
1102                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1103                                  desc_info->data_size, direction);
1104                 kfree(desc_info->data);
1105         }
1106         return err;
1107 }
1108
1109 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1110                                       const struct rocker_dma_ring_info *info,
1111                                       int direction)
1112 {
1113         struct pci_dev *pdev = rocker->pdev;
1114         int i;
1115
1116         for (i = 0; i < info->size; i++) {
1117                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1118                 struct rocker_desc *desc = &info->desc[i];
1119
1120                 desc->buf_addr = 0;
1121                 desc->buf_size = 0;
1122                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1123                                  desc_info->data_size, direction);
1124                 kfree(desc_info->data);
1125         }
1126 }
1127
1128 static int rocker_dma_rings_init(struct rocker *rocker)
1129 {
1130         const struct pci_dev *pdev = rocker->pdev;
1131         int err;
1132
1133         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1134                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1135                                      &rocker->cmd_ring);
1136         if (err) {
1137                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1138                 return err;
1139         }
1140
1141         spin_lock_init(&rocker->cmd_ring_lock);
1142
1143         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1144                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1145         if (err) {
1146                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1147                 goto err_dma_cmd_ring_bufs_alloc;
1148         }
1149
1150         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1151                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1152                                      &rocker->event_ring);
1153         if (err) {
1154                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1155                 goto err_dma_event_ring_create;
1156         }
1157
1158         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1159                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1160         if (err) {
1161                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1162                 goto err_dma_event_ring_bufs_alloc;
1163         }
1164         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1165         return 0;
1166
1167 err_dma_event_ring_bufs_alloc:
1168         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1169 err_dma_event_ring_create:
1170         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1171                                   PCI_DMA_BIDIRECTIONAL);
1172 err_dma_cmd_ring_bufs_alloc:
1173         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1174         return err;
1175 }
1176
1177 static void rocker_dma_rings_fini(struct rocker *rocker)
1178 {
1179         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1180                                   PCI_DMA_BIDIRECTIONAL);
1181         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1182         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1183                                   PCI_DMA_BIDIRECTIONAL);
1184         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1185 }
1186
1187 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1188                                       struct rocker_desc_info *desc_info,
1189                                       struct sk_buff *skb, size_t buf_len)
1190 {
1191         const struct rocker *rocker = rocker_port->rocker;
1192         struct pci_dev *pdev = rocker->pdev;
1193         dma_addr_t dma_handle;
1194
1195         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1196                                     PCI_DMA_FROMDEVICE);
1197         if (pci_dma_mapping_error(pdev, dma_handle))
1198                 return -EIO;
1199         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1200                 goto tlv_put_failure;
1201         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1202                 goto tlv_put_failure;
1203         return 0;
1204
1205 tlv_put_failure:
1206         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1207         desc_info->tlv_size = 0;
1208         return -EMSGSIZE;
1209 }
1210
1211 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1212 {
1213         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1214 }
1215
1216 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1217                                         struct rocker_desc_info *desc_info)
1218 {
1219         struct net_device *dev = rocker_port->dev;
1220         struct sk_buff *skb;
1221         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1222         int err;
1223
1224         /* Ensure that hw will see tlv_size zero in case of an error.
1225          * That tells hw to use another descriptor.
1226          */
1227         rocker_desc_cookie_ptr_set(desc_info, NULL);
1228         desc_info->tlv_size = 0;
1229
1230         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1231         if (!skb)
1232                 return -ENOMEM;
1233         err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1234         if (err) {
1235                 dev_kfree_skb_any(skb);
1236                 return err;
1237         }
1238         rocker_desc_cookie_ptr_set(desc_info, skb);
1239         return 0;
1240 }
1241
1242 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1243                                          const struct rocker_tlv **attrs)
1244 {
1245         struct pci_dev *pdev = rocker->pdev;
1246         dma_addr_t dma_handle;
1247         size_t len;
1248
1249         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1250             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1251                 return;
1252         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1253         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1254         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1255 }
1256
1257 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1258                                         const struct rocker_desc_info *desc_info)
1259 {
1260         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1261         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1262
1263         if (!skb)
1264                 return;
1265         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1266         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1267         dev_kfree_skb_any(skb);
1268 }
1269
1270 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1271 {
1272         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1273         const struct rocker *rocker = rocker_port->rocker;
1274         int i;
1275         int err;
1276
1277         for (i = 0; i < rx_ring->size; i++) {
1278                 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1279                                                    &rx_ring->desc_info[i]);
1280                 if (err)
1281                         goto rollback;
1282         }
1283         return 0;
1284
1285 rollback:
1286         for (i--; i >= 0; i--)
1287                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1288         return err;
1289 }
1290
1291 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1292 {
1293         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1294         const struct rocker *rocker = rocker_port->rocker;
1295         int i;
1296
1297         for (i = 0; i < rx_ring->size; i++)
1298                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1299 }
1300
1301 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1302 {
1303         struct rocker *rocker = rocker_port->rocker;
1304         int err;
1305
1306         err = rocker_dma_ring_create(rocker,
1307                                      ROCKER_DMA_TX(rocker_port->port_number),
1308                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1309                                      &rocker_port->tx_ring);
1310         if (err) {
1311                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1312                 return err;
1313         }
1314
1315         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1316                                          PCI_DMA_TODEVICE,
1317                                          ROCKER_DMA_TX_DESC_SIZE);
1318         if (err) {
1319                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1320                 goto err_dma_tx_ring_bufs_alloc;
1321         }
1322
1323         err = rocker_dma_ring_create(rocker,
1324                                      ROCKER_DMA_RX(rocker_port->port_number),
1325                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1326                                      &rocker_port->rx_ring);
1327         if (err) {
1328                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1329                 goto err_dma_rx_ring_create;
1330         }
1331
1332         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1333                                          PCI_DMA_BIDIRECTIONAL,
1334                                          ROCKER_DMA_RX_DESC_SIZE);
1335         if (err) {
1336                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1337                 goto err_dma_rx_ring_bufs_alloc;
1338         }
1339
1340         err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1341         if (err) {
1342                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1343                 goto err_dma_rx_ring_skbs_alloc;
1344         }
1345         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1346
1347         return 0;
1348
1349 err_dma_rx_ring_skbs_alloc:
1350         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1351                                   PCI_DMA_BIDIRECTIONAL);
1352 err_dma_rx_ring_bufs_alloc:
1353         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1354 err_dma_rx_ring_create:
1355         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1356                                   PCI_DMA_TODEVICE);
1357 err_dma_tx_ring_bufs_alloc:
1358         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1359         return err;
1360 }
1361
1362 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1363 {
1364         struct rocker *rocker = rocker_port->rocker;
1365
1366         rocker_dma_rx_ring_skbs_free(rocker_port);
1367         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1368                                   PCI_DMA_BIDIRECTIONAL);
1369         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1370         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1371                                   PCI_DMA_TODEVICE);
1372         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1373 }
1374
1375 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1376                                    bool enable)
1377 {
1378         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1379
1380         if (enable)
1381                 val |= 1ULL << rocker_port->pport;
1382         else
1383                 val &= ~(1ULL << rocker_port->pport);
1384         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1385 }
1386
1387 /********************************
1388  * Interrupt handler and helpers
1389  ********************************/
1390
1391 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1392 {
1393         struct rocker *rocker = dev_id;
1394         const struct rocker_desc_info *desc_info;
1395         struct rocker_wait *wait;
1396         u32 credits = 0;
1397
1398         spin_lock(&rocker->cmd_ring_lock);
1399         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1400                 wait = rocker_desc_cookie_ptr_get(desc_info);
1401                 if (wait->nowait) {
1402                         rocker_desc_gen_clear(desc_info);
1403                         rocker_wait_destroy(SWITCHDEV_TRANS_NONE, wait);
1404                 } else {
1405                         rocker_wait_wake_up(wait);
1406                 }
1407                 credits++;
1408         }
1409         spin_unlock(&rocker->cmd_ring_lock);
1410         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1411
1412         return IRQ_HANDLED;
1413 }
1414
1415 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1416 {
1417         netif_carrier_on(rocker_port->dev);
1418         netdev_info(rocker_port->dev, "Link is up\n");
1419 }
1420
1421 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1422 {
1423         netif_carrier_off(rocker_port->dev);
1424         netdev_info(rocker_port->dev, "Link is down\n");
1425 }
1426
1427 static int rocker_event_link_change(const struct rocker *rocker,
1428                                     const struct rocker_tlv *info)
1429 {
1430         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1431         unsigned int port_number;
1432         bool link_up;
1433         struct rocker_port *rocker_port;
1434
1435         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1436         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1437             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1438                 return -EIO;
1439         port_number =
1440                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1441         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1442
1443         if (port_number >= rocker->port_count)
1444                 return -EINVAL;
1445
1446         rocker_port = rocker->ports[port_number];
1447         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1448                 if (link_up)
1449                         rocker_port_link_up(rocker_port);
1450                 else
1451                         rocker_port_link_down(rocker_port);
1452         }
1453
1454         return 0;
1455 }
1456
1457 static int rocker_port_fdb(struct rocker_port *rocker_port,
1458                            enum switchdev_trans trans,
1459                            const unsigned char *addr,
1460                            __be16 vlan_id, int flags);
1461
1462 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1463                                       const struct rocker_tlv *info)
1464 {
1465         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1466         unsigned int port_number;
1467         struct rocker_port *rocker_port;
1468         const unsigned char *addr;
1469         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1470         __be16 vlan_id;
1471
1472         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1473         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1474             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1475             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1476                 return -EIO;
1477         port_number =
1478                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1479         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1480         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1481
1482         if (port_number >= rocker->port_count)
1483                 return -EINVAL;
1484
1485         rocker_port = rocker->ports[port_number];
1486
1487         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1488             rocker_port->stp_state != BR_STATE_FORWARDING)
1489                 return 0;
1490
1491         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
1492                                addr, vlan_id, flags);
1493 }
1494
1495 static int rocker_event_process(const struct rocker *rocker,
1496                                 const struct rocker_desc_info *desc_info)
1497 {
1498         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1499         const struct rocker_tlv *info;
1500         u16 type;
1501
1502         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1503         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1504             !attrs[ROCKER_TLV_EVENT_INFO])
1505                 return -EIO;
1506
1507         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1508         info = attrs[ROCKER_TLV_EVENT_INFO];
1509
1510         switch (type) {
1511         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1512                 return rocker_event_link_change(rocker, info);
1513         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1514                 return rocker_event_mac_vlan_seen(rocker, info);
1515         }
1516
1517         return -EOPNOTSUPP;
1518 }
1519
1520 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1521 {
1522         struct rocker *rocker = dev_id;
1523         const struct pci_dev *pdev = rocker->pdev;
1524         const struct rocker_desc_info *desc_info;
1525         u32 credits = 0;
1526         int err;
1527
1528         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1529                 err = rocker_desc_err(desc_info);
1530                 if (err) {
1531                         dev_err(&pdev->dev, "event desc received with err %d\n",
1532                                 err);
1533                 } else {
1534                         err = rocker_event_process(rocker, desc_info);
1535                         if (err)
1536                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1537                                         err);
1538                 }
1539                 rocker_desc_gen_clear(desc_info);
1540                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1541                 credits++;
1542         }
1543         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1544
1545         return IRQ_HANDLED;
1546 }
1547
1548 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1549 {
1550         struct rocker_port *rocker_port = dev_id;
1551
1552         napi_schedule(&rocker_port->napi_tx);
1553         return IRQ_HANDLED;
1554 }
1555
1556 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1557 {
1558         struct rocker_port *rocker_port = dev_id;
1559
1560         napi_schedule(&rocker_port->napi_rx);
1561         return IRQ_HANDLED;
1562 }
1563
1564 /********************
1565  * Command interface
1566  ********************/
1567
1568 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1569                                     struct rocker_desc_info *desc_info,
1570                                     void *priv);
1571
1572 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1573                                     const struct rocker_desc_info *desc_info,
1574                                     void *priv);
1575
1576 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1577                            enum switchdev_trans trans, int flags,
1578                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1579                            rocker_cmd_proc_cb_t process, void *process_priv)
1580 {
1581         struct rocker *rocker = rocker_port->rocker;
1582         struct rocker_desc_info *desc_info;
1583         struct rocker_wait *wait;
1584         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1585         unsigned long lock_flags;
1586         int err;
1587
1588         wait = rocker_wait_create(rocker_port, trans, flags);
1589         if (!wait)
1590                 return -ENOMEM;
1591         wait->nowait = nowait;
1592
1593         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1594
1595         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1596         if (!desc_info) {
1597                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1598                 err = -EAGAIN;
1599                 goto out;
1600         }
1601
1602         err = prepare(rocker_port, desc_info, prepare_priv);
1603         if (err) {
1604                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1605                 goto out;
1606         }
1607
1608         rocker_desc_cookie_ptr_set(desc_info, wait);
1609
1610         if (trans != SWITCHDEV_TRANS_PREPARE)
1611                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1612
1613         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1614
1615         if (nowait)
1616                 return 0;
1617
1618         if (trans != SWITCHDEV_TRANS_PREPARE)
1619                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1620                         return -EIO;
1621
1622         err = rocker_desc_err(desc_info);
1623         if (err)
1624                 return err;
1625
1626         if (process)
1627                 err = process(rocker_port, desc_info, process_priv);
1628
1629         rocker_desc_gen_clear(desc_info);
1630 out:
1631         rocker_wait_destroy(trans, wait);
1632         return err;
1633 }
1634
1635 static int
1636 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1637                                   struct rocker_desc_info *desc_info,
1638                                   void *priv)
1639 {
1640         struct rocker_tlv *cmd_info;
1641
1642         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1643                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1644                 return -EMSGSIZE;
1645         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1646         if (!cmd_info)
1647                 return -EMSGSIZE;
1648         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1649                                rocker_port->pport))
1650                 return -EMSGSIZE;
1651         rocker_tlv_nest_end(desc_info, cmd_info);
1652         return 0;
1653 }
1654
1655 static int
1656 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1657                                           const struct rocker_desc_info *desc_info,
1658                                           void *priv)
1659 {
1660         struct ethtool_cmd *ecmd = priv;
1661         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1662         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1663         u32 speed;
1664         u8 duplex;
1665         u8 autoneg;
1666
1667         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1668         if (!attrs[ROCKER_TLV_CMD_INFO])
1669                 return -EIO;
1670
1671         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1672                                 attrs[ROCKER_TLV_CMD_INFO]);
1673         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1674             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1675             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1676                 return -EIO;
1677
1678         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1679         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1680         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1681
1682         ecmd->transceiver = XCVR_INTERNAL;
1683         ecmd->supported = SUPPORTED_TP;
1684         ecmd->phy_address = 0xff;
1685         ecmd->port = PORT_TP;
1686         ethtool_cmd_speed_set(ecmd, speed);
1687         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1688         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1689
1690         return 0;
1691 }
1692
1693 static int
1694 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1695                                           const struct rocker_desc_info *desc_info,
1696                                           void *priv)
1697 {
1698         unsigned char *macaddr = priv;
1699         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1700         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1701         const struct rocker_tlv *attr;
1702
1703         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1704         if (!attrs[ROCKER_TLV_CMD_INFO])
1705                 return -EIO;
1706
1707         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1708                                 attrs[ROCKER_TLV_CMD_INFO]);
1709         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1710         if (!attr)
1711                 return -EIO;
1712
1713         if (rocker_tlv_len(attr) != ETH_ALEN)
1714                 return -EINVAL;
1715
1716         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1717         return 0;
1718 }
1719
1720 struct port_name {
1721         char *buf;
1722         size_t len;
1723 };
1724
1725 static int
1726 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1727                                             const struct rocker_desc_info *desc_info,
1728                                             void *priv)
1729 {
1730         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1731         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1732         struct port_name *name = priv;
1733         const struct rocker_tlv *attr;
1734         size_t i, j, len;
1735         const char *str;
1736
1737         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1738         if (!attrs[ROCKER_TLV_CMD_INFO])
1739                 return -EIO;
1740
1741         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1742                                 attrs[ROCKER_TLV_CMD_INFO]);
1743         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1744         if (!attr)
1745                 return -EIO;
1746
1747         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1748         str = rocker_tlv_data(attr);
1749
1750         /* make sure name only contains alphanumeric characters */
1751         for (i = j = 0; i < len; ++i) {
1752                 if (isalnum(str[i])) {
1753                         name->buf[j] = str[i];
1754                         j++;
1755                 }
1756         }
1757
1758         if (j == 0)
1759                 return -EIO;
1760
1761         name->buf[j] = '\0';
1762
1763         return 0;
1764 }
1765
1766 static int
1767 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1768                                           struct rocker_desc_info *desc_info,
1769                                           void *priv)
1770 {
1771         struct ethtool_cmd *ecmd = priv;
1772         struct rocker_tlv *cmd_info;
1773
1774         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1775                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1776                 return -EMSGSIZE;
1777         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1778         if (!cmd_info)
1779                 return -EMSGSIZE;
1780         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1781                                rocker_port->pport))
1782                 return -EMSGSIZE;
1783         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1784                                ethtool_cmd_speed(ecmd)))
1785                 return -EMSGSIZE;
1786         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1787                               ecmd->duplex))
1788                 return -EMSGSIZE;
1789         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1790                               ecmd->autoneg))
1791                 return -EMSGSIZE;
1792         rocker_tlv_nest_end(desc_info, cmd_info);
1793         return 0;
1794 }
1795
1796 static int
1797 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1798                                           struct rocker_desc_info *desc_info,
1799                                           void *priv)
1800 {
1801         const unsigned char *macaddr = priv;
1802         struct rocker_tlv *cmd_info;
1803
1804         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1805                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1806                 return -EMSGSIZE;
1807         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1808         if (!cmd_info)
1809                 return -EMSGSIZE;
1810         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1811                                rocker_port->pport))
1812                 return -EMSGSIZE;
1813         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1814                            ETH_ALEN, macaddr))
1815                 return -EMSGSIZE;
1816         rocker_tlv_nest_end(desc_info, cmd_info);
1817         return 0;
1818 }
1819
1820 static int
1821 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1822                                   struct rocker_desc_info *desc_info,
1823                                   void *priv)
1824 {
1825         struct rocker_tlv *cmd_info;
1826
1827         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1828                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1829                 return -EMSGSIZE;
1830         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1831         if (!cmd_info)
1832                 return -EMSGSIZE;
1833         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1834                                rocker_port->pport))
1835                 return -EMSGSIZE;
1836         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1837                               !!(rocker_port->brport_flags & BR_LEARNING)))
1838                 return -EMSGSIZE;
1839         rocker_tlv_nest_end(desc_info, cmd_info);
1840         return 0;
1841 }
1842
1843 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1844                                                 struct ethtool_cmd *ecmd)
1845 {
1846         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1847                                rocker_cmd_get_port_settings_prep, NULL,
1848                                rocker_cmd_get_port_settings_ethtool_proc,
1849                                ecmd);
1850 }
1851
1852 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1853                                                 unsigned char *macaddr)
1854 {
1855         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1856                                rocker_cmd_get_port_settings_prep, NULL,
1857                                rocker_cmd_get_port_settings_macaddr_proc,
1858                                macaddr);
1859 }
1860
1861 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1862                                                 struct ethtool_cmd *ecmd)
1863 {
1864         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1865                                rocker_cmd_set_port_settings_ethtool_prep,
1866                                ecmd, NULL, NULL);
1867 }
1868
1869 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1870                                                 unsigned char *macaddr)
1871 {
1872         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1873                                rocker_cmd_set_port_settings_macaddr_prep,
1874                                macaddr, NULL, NULL);
1875 }
1876
1877 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1878                                     enum switchdev_trans trans)
1879 {
1880         return rocker_cmd_exec(rocker_port, trans, 0,
1881                                rocker_cmd_set_port_learning_prep,
1882                                NULL, NULL, NULL);
1883 }
1884
1885 static int
1886 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1887                                 const struct rocker_flow_tbl_entry *entry)
1888 {
1889         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1890                                entry->key.ig_port.in_pport))
1891                 return -EMSGSIZE;
1892         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1893                                entry->key.ig_port.in_pport_mask))
1894                 return -EMSGSIZE;
1895         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1896                                entry->key.ig_port.goto_tbl))
1897                 return -EMSGSIZE;
1898
1899         return 0;
1900 }
1901
1902 static int
1903 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1904                              const struct rocker_flow_tbl_entry *entry)
1905 {
1906         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1907                                entry->key.vlan.in_pport))
1908                 return -EMSGSIZE;
1909         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1910                                 entry->key.vlan.vlan_id))
1911                 return -EMSGSIZE;
1912         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1913                                 entry->key.vlan.vlan_id_mask))
1914                 return -EMSGSIZE;
1915         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1916                                entry->key.vlan.goto_tbl))
1917                 return -EMSGSIZE;
1918         if (entry->key.vlan.untagged &&
1919             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1920                                 entry->key.vlan.new_vlan_id))
1921                 return -EMSGSIZE;
1922
1923         return 0;
1924 }
1925
1926 static int
1927 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1928                                  const struct rocker_flow_tbl_entry *entry)
1929 {
1930         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1931                                entry->key.term_mac.in_pport))
1932                 return -EMSGSIZE;
1933         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1934                                entry->key.term_mac.in_pport_mask))
1935                 return -EMSGSIZE;
1936         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1937                                 entry->key.term_mac.eth_type))
1938                 return -EMSGSIZE;
1939         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1940                            ETH_ALEN, entry->key.term_mac.eth_dst))
1941                 return -EMSGSIZE;
1942         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1943                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1944                 return -EMSGSIZE;
1945         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1946                                 entry->key.term_mac.vlan_id))
1947                 return -EMSGSIZE;
1948         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1949                                 entry->key.term_mac.vlan_id_mask))
1950                 return -EMSGSIZE;
1951         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1952                                entry->key.term_mac.goto_tbl))
1953                 return -EMSGSIZE;
1954         if (entry->key.term_mac.copy_to_cpu &&
1955             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1956                               entry->key.term_mac.copy_to_cpu))
1957                 return -EMSGSIZE;
1958
1959         return 0;
1960 }
1961
1962 static int
1963 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1964                                       const struct rocker_flow_tbl_entry *entry)
1965 {
1966         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1967                                 entry->key.ucast_routing.eth_type))
1968                 return -EMSGSIZE;
1969         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1970                                 entry->key.ucast_routing.dst4))
1971                 return -EMSGSIZE;
1972         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1973                                 entry->key.ucast_routing.dst4_mask))
1974                 return -EMSGSIZE;
1975         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1976                                entry->key.ucast_routing.goto_tbl))
1977                 return -EMSGSIZE;
1978         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1979                                entry->key.ucast_routing.group_id))
1980                 return -EMSGSIZE;
1981
1982         return 0;
1983 }
1984
1985 static int
1986 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1987                                const struct rocker_flow_tbl_entry *entry)
1988 {
1989         if (entry->key.bridge.has_eth_dst &&
1990             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1991                            ETH_ALEN, entry->key.bridge.eth_dst))
1992                 return -EMSGSIZE;
1993         if (entry->key.bridge.has_eth_dst_mask &&
1994             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1995                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
1996                 return -EMSGSIZE;
1997         if (entry->key.bridge.vlan_id &&
1998             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1999                                 entry->key.bridge.vlan_id))
2000                 return -EMSGSIZE;
2001         if (entry->key.bridge.tunnel_id &&
2002             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2003                                entry->key.bridge.tunnel_id))
2004                 return -EMSGSIZE;
2005         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2006                                entry->key.bridge.goto_tbl))
2007                 return -EMSGSIZE;
2008         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2009                                entry->key.bridge.group_id))
2010                 return -EMSGSIZE;
2011         if (entry->key.bridge.copy_to_cpu &&
2012             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2013                               entry->key.bridge.copy_to_cpu))
2014                 return -EMSGSIZE;
2015
2016         return 0;
2017 }
2018
2019 static int
2020 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2021                             const struct rocker_flow_tbl_entry *entry)
2022 {
2023         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2024                                entry->key.acl.in_pport))
2025                 return -EMSGSIZE;
2026         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2027                                entry->key.acl.in_pport_mask))
2028                 return -EMSGSIZE;
2029         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2030                            ETH_ALEN, entry->key.acl.eth_src))
2031                 return -EMSGSIZE;
2032         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2033                            ETH_ALEN, entry->key.acl.eth_src_mask))
2034                 return -EMSGSIZE;
2035         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2036                            ETH_ALEN, entry->key.acl.eth_dst))
2037                 return -EMSGSIZE;
2038         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2039                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2040                 return -EMSGSIZE;
2041         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2042                                 entry->key.acl.eth_type))
2043                 return -EMSGSIZE;
2044         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2045                                 entry->key.acl.vlan_id))
2046                 return -EMSGSIZE;
2047         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2048                                 entry->key.acl.vlan_id_mask))
2049                 return -EMSGSIZE;
2050
2051         switch (ntohs(entry->key.acl.eth_type)) {
2052         case ETH_P_IP:
2053         case ETH_P_IPV6:
2054                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2055                                       entry->key.acl.ip_proto))
2056                         return -EMSGSIZE;
2057                 if (rocker_tlv_put_u8(desc_info,
2058                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2059                                       entry->key.acl.ip_proto_mask))
2060                         return -EMSGSIZE;
2061                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2062                                       entry->key.acl.ip_tos & 0x3f))
2063                         return -EMSGSIZE;
2064                 if (rocker_tlv_put_u8(desc_info,
2065                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2066                                       entry->key.acl.ip_tos_mask & 0x3f))
2067                         return -EMSGSIZE;
2068                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2069                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2070                         return -EMSGSIZE;
2071                 if (rocker_tlv_put_u8(desc_info,
2072                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2073                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2074                         return -EMSGSIZE;
2075                 break;
2076         }
2077
2078         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2079             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2080                                entry->key.acl.group_id))
2081                 return -EMSGSIZE;
2082
2083         return 0;
2084 }
2085
2086 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2087                                    struct rocker_desc_info *desc_info,
2088                                    void *priv)
2089 {
2090         const struct rocker_flow_tbl_entry *entry = priv;
2091         struct rocker_tlv *cmd_info;
2092         int err = 0;
2093
2094         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2095                 return -EMSGSIZE;
2096         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2097         if (!cmd_info)
2098                 return -EMSGSIZE;
2099         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2100                                entry->key.tbl_id))
2101                 return -EMSGSIZE;
2102         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2103                                entry->key.priority))
2104                 return -EMSGSIZE;
2105         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2106                 return -EMSGSIZE;
2107         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2108                                entry->cookie))
2109                 return -EMSGSIZE;
2110
2111         switch (entry->key.tbl_id) {
2112         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2113                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2114                 break;
2115         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2116                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2117                 break;
2118         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2119                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2120                 break;
2121         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2122                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2123                 break;
2124         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2125                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2126                 break;
2127         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2128                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2129                 break;
2130         default:
2131                 err = -ENOTSUPP;
2132                 break;
2133         }
2134
2135         if (err)
2136                 return err;
2137
2138         rocker_tlv_nest_end(desc_info, cmd_info);
2139
2140         return 0;
2141 }
2142
2143 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2144                                    struct rocker_desc_info *desc_info,
2145                                    void *priv)
2146 {
2147         const struct rocker_flow_tbl_entry *entry = priv;
2148         struct rocker_tlv *cmd_info;
2149
2150         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2151                 return -EMSGSIZE;
2152         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2153         if (!cmd_info)
2154                 return -EMSGSIZE;
2155         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2156                                entry->cookie))
2157                 return -EMSGSIZE;
2158         rocker_tlv_nest_end(desc_info, cmd_info);
2159
2160         return 0;
2161 }
2162
2163 static int
2164 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2165                                       struct rocker_group_tbl_entry *entry)
2166 {
2167         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2168                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2169                 return -EMSGSIZE;
2170         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2171                               entry->l2_interface.pop_vlan))
2172                 return -EMSGSIZE;
2173
2174         return 0;
2175 }
2176
2177 static int
2178 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2179                                     const struct rocker_group_tbl_entry *entry)
2180 {
2181         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2182                                entry->l2_rewrite.group_id))
2183                 return -EMSGSIZE;
2184         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2185             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2186                            ETH_ALEN, entry->l2_rewrite.eth_src))
2187                 return -EMSGSIZE;
2188         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2189             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2190                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2191                 return -EMSGSIZE;
2192         if (entry->l2_rewrite.vlan_id &&
2193             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2194                                 entry->l2_rewrite.vlan_id))
2195                 return -EMSGSIZE;
2196
2197         return 0;
2198 }
2199
2200 static int
2201 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2202                                    const struct rocker_group_tbl_entry *entry)
2203 {
2204         int i;
2205         struct rocker_tlv *group_ids;
2206
2207         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2208                                entry->group_count))
2209                 return -EMSGSIZE;
2210
2211         group_ids = rocker_tlv_nest_start(desc_info,
2212                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2213         if (!group_ids)
2214                 return -EMSGSIZE;
2215
2216         for (i = 0; i < entry->group_count; i++)
2217                 /* Note TLV array is 1-based */
2218                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2219                         return -EMSGSIZE;
2220
2221         rocker_tlv_nest_end(desc_info, group_ids);
2222
2223         return 0;
2224 }
2225
2226 static int
2227 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2228                                     const struct rocker_group_tbl_entry *entry)
2229 {
2230         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2231             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2232                            ETH_ALEN, entry->l3_unicast.eth_src))
2233                 return -EMSGSIZE;
2234         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2235             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2236                            ETH_ALEN, entry->l3_unicast.eth_dst))
2237                 return -EMSGSIZE;
2238         if (entry->l3_unicast.vlan_id &&
2239             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2240                                 entry->l3_unicast.vlan_id))
2241                 return -EMSGSIZE;
2242         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2243                               entry->l3_unicast.ttl_check))
2244                 return -EMSGSIZE;
2245         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2246                                entry->l3_unicast.group_id))
2247                 return -EMSGSIZE;
2248
2249         return 0;
2250 }
2251
2252 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2253                                     struct rocker_desc_info *desc_info,
2254                                     void *priv)
2255 {
2256         struct rocker_group_tbl_entry *entry = priv;
2257         struct rocker_tlv *cmd_info;
2258         int err = 0;
2259
2260         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2261                 return -EMSGSIZE;
2262         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2263         if (!cmd_info)
2264                 return -EMSGSIZE;
2265
2266         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2267                                entry->group_id))
2268                 return -EMSGSIZE;
2269
2270         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2271         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2272                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2273                 break;
2274         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2275                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2276                 break;
2277         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2278         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2279                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2280                 break;
2281         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2282                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2283                 break;
2284         default:
2285                 err = -ENOTSUPP;
2286                 break;
2287         }
2288
2289         if (err)
2290                 return err;
2291
2292         rocker_tlv_nest_end(desc_info, cmd_info);
2293
2294         return 0;
2295 }
2296
2297 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2298                                     struct rocker_desc_info *desc_info,
2299                                     void *priv)
2300 {
2301         const struct rocker_group_tbl_entry *entry = priv;
2302         struct rocker_tlv *cmd_info;
2303
2304         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2305                 return -EMSGSIZE;
2306         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2307         if (!cmd_info)
2308                 return -EMSGSIZE;
2309         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2310                                entry->group_id))
2311                 return -EMSGSIZE;
2312         rocker_tlv_nest_end(desc_info, cmd_info);
2313
2314         return 0;
2315 }
2316
2317 /***************************************************
2318  * Flow, group, FDB, internal VLAN and neigh tables
2319  ***************************************************/
2320
2321 static int rocker_init_tbls(struct rocker *rocker)
2322 {
2323         hash_init(rocker->flow_tbl);
2324         spin_lock_init(&rocker->flow_tbl_lock);
2325
2326         hash_init(rocker->group_tbl);
2327         spin_lock_init(&rocker->group_tbl_lock);
2328
2329         hash_init(rocker->fdb_tbl);
2330         spin_lock_init(&rocker->fdb_tbl_lock);
2331
2332         hash_init(rocker->internal_vlan_tbl);
2333         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2334
2335         hash_init(rocker->neigh_tbl);
2336         spin_lock_init(&rocker->neigh_tbl_lock);
2337
2338         return 0;
2339 }
2340
2341 static void rocker_free_tbls(struct rocker *rocker)
2342 {
2343         unsigned long flags;
2344         struct rocker_flow_tbl_entry *flow_entry;
2345         struct rocker_group_tbl_entry *group_entry;
2346         struct rocker_fdb_tbl_entry *fdb_entry;
2347         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2348         struct rocker_neigh_tbl_entry *neigh_entry;
2349         struct hlist_node *tmp;
2350         int bkt;
2351
2352         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2353         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2354                 hash_del(&flow_entry->entry);
2355         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2356
2357         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2358         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2359                 hash_del(&group_entry->entry);
2360         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2361
2362         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2363         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2364                 hash_del(&fdb_entry->entry);
2365         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2366
2367         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2368         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2369                            tmp, internal_vlan_entry, entry)
2370                 hash_del(&internal_vlan_entry->entry);
2371         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2372
2373         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2374         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2375                 hash_del(&neigh_entry->entry);
2376         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2377 }
2378
2379 static struct rocker_flow_tbl_entry *
2380 rocker_flow_tbl_find(const struct rocker *rocker,
2381                      const struct rocker_flow_tbl_entry *match)
2382 {
2383         struct rocker_flow_tbl_entry *found;
2384         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2385
2386         hash_for_each_possible(rocker->flow_tbl, found,
2387                                entry, match->key_crc32) {
2388                 if (memcmp(&found->key, &match->key, key_len) == 0)
2389                         return found;
2390         }
2391
2392         return NULL;
2393 }
2394
2395 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2396                                enum switchdev_trans trans, int flags,
2397                                struct rocker_flow_tbl_entry *match)
2398 {
2399         struct rocker *rocker = rocker_port->rocker;
2400         struct rocker_flow_tbl_entry *found;
2401         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2402         unsigned long lock_flags;
2403
2404         match->key_crc32 = crc32(~0, &match->key, key_len);
2405
2406         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2407
2408         found = rocker_flow_tbl_find(rocker, match);
2409
2410         if (found) {
2411                 match->cookie = found->cookie;
2412                 if (trans != SWITCHDEV_TRANS_PREPARE)
2413                         hash_del(&found->entry);
2414                 rocker_port_kfree(trans, found);
2415                 found = match;
2416                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2417         } else {
2418                 found = match;
2419                 found->cookie = rocker->flow_tbl_next_cookie++;
2420                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2421         }
2422
2423         if (trans != SWITCHDEV_TRANS_PREPARE)
2424                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2425
2426         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2427
2428         return rocker_cmd_exec(rocker_port, trans, flags,
2429                                rocker_cmd_flow_tbl_add, found, NULL, NULL);
2430 }
2431
2432 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2433                                enum switchdev_trans trans, int flags,
2434                                struct rocker_flow_tbl_entry *match)
2435 {
2436         struct rocker *rocker = rocker_port->rocker;
2437         struct rocker_flow_tbl_entry *found;
2438         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2439         unsigned long lock_flags;
2440         int err = 0;
2441
2442         match->key_crc32 = crc32(~0, &match->key, key_len);
2443
2444         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2445
2446         found = rocker_flow_tbl_find(rocker, match);
2447
2448         if (found) {
2449                 if (trans != SWITCHDEV_TRANS_PREPARE)
2450                         hash_del(&found->entry);
2451                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2452         }
2453
2454         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2455
2456         rocker_port_kfree(trans, match);
2457
2458         if (found) {
2459                 err = rocker_cmd_exec(rocker_port, trans, flags,
2460                                       rocker_cmd_flow_tbl_del,
2461                                       found, NULL, NULL);
2462                 rocker_port_kfree(trans, found);
2463         }
2464
2465         return err;
2466 }
2467
2468 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2469                               enum switchdev_trans trans, int flags,
2470                               struct rocker_flow_tbl_entry *entry)
2471 {
2472         if (flags & ROCKER_OP_FLAG_REMOVE)
2473                 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2474         else
2475                 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2476 }
2477
2478 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2479                                    enum switchdev_trans trans, int flags,
2480                                    u32 in_pport, u32 in_pport_mask,
2481                                    enum rocker_of_dpa_table_id goto_tbl)
2482 {
2483         struct rocker_flow_tbl_entry *entry;
2484
2485         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2486         if (!entry)
2487                 return -ENOMEM;
2488
2489         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2490         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2491         entry->key.ig_port.in_pport = in_pport;
2492         entry->key.ig_port.in_pport_mask = in_pport_mask;
2493         entry->key.ig_port.goto_tbl = goto_tbl;
2494
2495         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2496 }
2497
2498 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2499                                 enum switchdev_trans trans, int flags,
2500                                 u32 in_pport, __be16 vlan_id,
2501                                 __be16 vlan_id_mask,
2502                                 enum rocker_of_dpa_table_id goto_tbl,
2503                                 bool untagged, __be16 new_vlan_id)
2504 {
2505         struct rocker_flow_tbl_entry *entry;
2506
2507         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2508         if (!entry)
2509                 return -ENOMEM;
2510
2511         entry->key.priority = ROCKER_PRIORITY_VLAN;
2512         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2513         entry->key.vlan.in_pport = in_pport;
2514         entry->key.vlan.vlan_id = vlan_id;
2515         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2516         entry->key.vlan.goto_tbl = goto_tbl;
2517
2518         entry->key.vlan.untagged = untagged;
2519         entry->key.vlan.new_vlan_id = new_vlan_id;
2520
2521         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2522 }
2523
2524 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2525                                     enum switchdev_trans trans,
2526                                     u32 in_pport, u32 in_pport_mask,
2527                                     __be16 eth_type, const u8 *eth_dst,
2528                                     const u8 *eth_dst_mask, __be16 vlan_id,
2529                                     __be16 vlan_id_mask, bool copy_to_cpu,
2530                                     int flags)
2531 {
2532         struct rocker_flow_tbl_entry *entry;
2533
2534         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2535         if (!entry)
2536                 return -ENOMEM;
2537
2538         if (is_multicast_ether_addr(eth_dst)) {
2539                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2540                 entry->key.term_mac.goto_tbl =
2541                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2542         } else {
2543                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2544                 entry->key.term_mac.goto_tbl =
2545                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2546         }
2547
2548         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2549         entry->key.term_mac.in_pport = in_pport;
2550         entry->key.term_mac.in_pport_mask = in_pport_mask;
2551         entry->key.term_mac.eth_type = eth_type;
2552         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2553         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2554         entry->key.term_mac.vlan_id = vlan_id;
2555         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2556         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2557
2558         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2559 }
2560
2561 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2562                                   enum switchdev_trans trans, int flags,
2563                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2564                                   __be16 vlan_id, u32 tunnel_id,
2565                                   enum rocker_of_dpa_table_id goto_tbl,
2566                                   u32 group_id, bool copy_to_cpu)
2567 {
2568         struct rocker_flow_tbl_entry *entry;
2569         u32 priority;
2570         bool vlan_bridging = !!vlan_id;
2571         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2572         bool wild = false;
2573
2574         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2575         if (!entry)
2576                 return -ENOMEM;
2577
2578         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2579
2580         if (eth_dst) {
2581                 entry->key.bridge.has_eth_dst = 1;
2582                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2583         }
2584         if (eth_dst_mask) {
2585                 entry->key.bridge.has_eth_dst_mask = 1;
2586                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2587                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2588                         wild = true;
2589         }
2590
2591         priority = ROCKER_PRIORITY_UNKNOWN;
2592         if (vlan_bridging && dflt && wild)
2593                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2594         else if (vlan_bridging && dflt && !wild)
2595                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2596         else if (vlan_bridging && !dflt)
2597                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2598         else if (!vlan_bridging && dflt && wild)
2599                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2600         else if (!vlan_bridging && dflt && !wild)
2601                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2602         else if (!vlan_bridging && !dflt)
2603                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2604
2605         entry->key.priority = priority;
2606         entry->key.bridge.vlan_id = vlan_id;
2607         entry->key.bridge.tunnel_id = tunnel_id;
2608         entry->key.bridge.goto_tbl = goto_tbl;
2609         entry->key.bridge.group_id = group_id;
2610         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2611
2612         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2613 }
2614
2615 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2616                                           enum switchdev_trans trans,
2617                                           __be16 eth_type, __be32 dst,
2618                                           __be32 dst_mask, u32 priority,
2619                                           enum rocker_of_dpa_table_id goto_tbl,
2620                                           u32 group_id, int flags)
2621 {
2622         struct rocker_flow_tbl_entry *entry;
2623
2624         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2625         if (!entry)
2626                 return -ENOMEM;
2627
2628         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2629         entry->key.priority = priority;
2630         entry->key.ucast_routing.eth_type = eth_type;
2631         entry->key.ucast_routing.dst4 = dst;
2632         entry->key.ucast_routing.dst4_mask = dst_mask;
2633         entry->key.ucast_routing.goto_tbl = goto_tbl;
2634         entry->key.ucast_routing.group_id = group_id;
2635         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2636                                   ucast_routing.group_id);
2637
2638         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2639 }
2640
2641 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2642                                enum switchdev_trans trans, int flags,
2643                                u32 in_pport, u32 in_pport_mask,
2644                                const u8 *eth_src, const u8 *eth_src_mask,
2645                                const u8 *eth_dst, const u8 *eth_dst_mask,
2646                                __be16 eth_type, __be16 vlan_id,
2647                                __be16 vlan_id_mask, u8 ip_proto,
2648                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2649                                u32 group_id)
2650 {
2651         u32 priority;
2652         struct rocker_flow_tbl_entry *entry;
2653
2654         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2655         if (!entry)
2656                 return -ENOMEM;
2657
2658         priority = ROCKER_PRIORITY_ACL_NORMAL;
2659         if (eth_dst && eth_dst_mask) {
2660                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2661                         priority = ROCKER_PRIORITY_ACL_DFLT;
2662                 else if (is_link_local_ether_addr(eth_dst))
2663                         priority = ROCKER_PRIORITY_ACL_CTRL;
2664         }
2665
2666         entry->key.priority = priority;
2667         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2668         entry->key.acl.in_pport = in_pport;
2669         entry->key.acl.in_pport_mask = in_pport_mask;
2670
2671         if (eth_src)
2672                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2673         if (eth_src_mask)
2674                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2675         if (eth_dst)
2676                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2677         if (eth_dst_mask)
2678                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2679
2680         entry->key.acl.eth_type = eth_type;
2681         entry->key.acl.vlan_id = vlan_id;
2682         entry->key.acl.vlan_id_mask = vlan_id_mask;
2683         entry->key.acl.ip_proto = ip_proto;
2684         entry->key.acl.ip_proto_mask = ip_proto_mask;
2685         entry->key.acl.ip_tos = ip_tos;
2686         entry->key.acl.ip_tos_mask = ip_tos_mask;
2687         entry->key.acl.group_id = group_id;
2688
2689         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2690 }
2691
2692 static struct rocker_group_tbl_entry *
2693 rocker_group_tbl_find(const struct rocker *rocker,
2694                       const struct rocker_group_tbl_entry *match)
2695 {
2696         struct rocker_group_tbl_entry *found;
2697
2698         hash_for_each_possible(rocker->group_tbl, found,
2699                                entry, match->group_id) {
2700                 if (found->group_id == match->group_id)
2701                         return found;
2702         }
2703
2704         return NULL;
2705 }
2706
2707 static void rocker_group_tbl_entry_free(enum switchdev_trans trans,
2708                                         struct rocker_group_tbl_entry *entry)
2709 {
2710         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2711         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2712         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2713                 rocker_port_kfree(trans, entry->group_ids);
2714                 break;
2715         default:
2716                 break;
2717         }
2718         rocker_port_kfree(trans, entry);
2719 }
2720
2721 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2722                                 enum switchdev_trans trans, int flags,
2723                                 struct rocker_group_tbl_entry *match)
2724 {
2725         struct rocker *rocker = rocker_port->rocker;
2726         struct rocker_group_tbl_entry *found;
2727         unsigned long lock_flags;
2728
2729         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2730
2731         found = rocker_group_tbl_find(rocker, match);
2732
2733         if (found) {
2734                 if (trans != SWITCHDEV_TRANS_PREPARE)
2735                         hash_del(&found->entry);
2736                 rocker_group_tbl_entry_free(trans, found);
2737                 found = match;
2738                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2739         } else {
2740                 found = match;
2741                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2742         }
2743
2744         if (trans != SWITCHDEV_TRANS_PREPARE)
2745                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2746
2747         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2748
2749         return rocker_cmd_exec(rocker_port, trans, flags,
2750                                rocker_cmd_group_tbl_add, found, NULL, NULL);
2751 }
2752
2753 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2754                                 enum switchdev_trans trans, int flags,
2755                                 struct rocker_group_tbl_entry *match)
2756 {
2757         struct rocker *rocker = rocker_port->rocker;
2758         struct rocker_group_tbl_entry *found;
2759         unsigned long lock_flags;
2760         int err = 0;
2761
2762         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2763
2764         found = rocker_group_tbl_find(rocker, match);
2765
2766         if (found) {
2767                 if (trans != SWITCHDEV_TRANS_PREPARE)
2768                         hash_del(&found->entry);
2769                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2770         }
2771
2772         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2773
2774         rocker_group_tbl_entry_free(trans, match);
2775
2776         if (found) {
2777                 err = rocker_cmd_exec(rocker_port, trans, flags,
2778                                       rocker_cmd_group_tbl_del,
2779                                       found, NULL, NULL);
2780                 rocker_group_tbl_entry_free(trans, found);
2781         }
2782
2783         return err;
2784 }
2785
2786 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2787                                enum switchdev_trans trans, int flags,
2788                                struct rocker_group_tbl_entry *entry)
2789 {
2790         if (flags & ROCKER_OP_FLAG_REMOVE)
2791                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2792         else
2793                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2794 }
2795
2796 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2797                                      enum switchdev_trans trans, int flags,
2798                                      __be16 vlan_id, u32 out_pport,
2799                                      int pop_vlan)
2800 {
2801         struct rocker_group_tbl_entry *entry;
2802
2803         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2804         if (!entry)
2805                 return -ENOMEM;
2806
2807         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2808         entry->l2_interface.pop_vlan = pop_vlan;
2809
2810         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2811 }
2812
2813 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2814                                    enum switchdev_trans trans,
2815                                    int flags, u8 group_count,
2816                                    const u32 *group_ids, u32 group_id)
2817 {
2818         struct rocker_group_tbl_entry *entry;
2819
2820         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2821         if (!entry)
2822                 return -ENOMEM;
2823
2824         entry->group_id = group_id;
2825         entry->group_count = group_count;
2826
2827         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2828                                                group_count, sizeof(u32));
2829         if (!entry->group_ids) {
2830                 rocker_port_kfree(trans, entry);
2831                 return -ENOMEM;
2832         }
2833         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2834
2835         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2836 }
2837
2838 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2839                                  enum switchdev_trans trans, int flags,
2840                                  __be16 vlan_id, u8 group_count,
2841                                  const u32 *group_ids, u32 group_id)
2842 {
2843         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2844                                        group_count, group_ids,
2845                                        group_id);
2846 }
2847
2848 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2849                                    enum switchdev_trans trans, int flags,
2850                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
2851                                    __be16 vlan_id, bool ttl_check, u32 pport)
2852 {
2853         struct rocker_group_tbl_entry *entry;
2854
2855         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2856         if (!entry)
2857                 return -ENOMEM;
2858
2859         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2860         if (src_mac)
2861                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2862         if (dst_mac)
2863                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2864         entry->l3_unicast.vlan_id = vlan_id;
2865         entry->l3_unicast.ttl_check = ttl_check;
2866         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2867
2868         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2869 }
2870
2871 static struct rocker_neigh_tbl_entry *
2872 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2873 {
2874         struct rocker_neigh_tbl_entry *found;
2875
2876         hash_for_each_possible(rocker->neigh_tbl, found,
2877                                entry, be32_to_cpu(ip_addr))
2878                 if (found->ip_addr == ip_addr)
2879                         return found;
2880
2881         return NULL;
2882 }
2883
2884 static void _rocker_neigh_add(struct rocker *rocker,
2885                               enum switchdev_trans trans,
2886                               struct rocker_neigh_tbl_entry *entry)
2887 {
2888         if (trans != SWITCHDEV_TRANS_COMMIT)
2889                 entry->index = rocker->neigh_tbl_next_index++;
2890         if (trans == SWITCHDEV_TRANS_PREPARE)
2891                 return;
2892         entry->ref_count++;
2893         hash_add(rocker->neigh_tbl, &entry->entry,
2894                  be32_to_cpu(entry->ip_addr));
2895 }
2896
2897 static void _rocker_neigh_del(enum switchdev_trans trans,
2898                               struct rocker_neigh_tbl_entry *entry)
2899 {
2900         if (trans == SWITCHDEV_TRANS_PREPARE)
2901                 return;
2902         if (--entry->ref_count == 0) {
2903                 hash_del(&entry->entry);
2904                 rocker_port_kfree(trans, entry);
2905         }
2906 }
2907
2908 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2909                                  enum switchdev_trans trans,
2910                                  const u8 *eth_dst, bool ttl_check)
2911 {
2912         if (eth_dst) {
2913                 ether_addr_copy(entry->eth_dst, eth_dst);
2914                 entry->ttl_check = ttl_check;
2915         } else if (trans != SWITCHDEV_TRANS_PREPARE) {
2916                 entry->ref_count++;
2917         }
2918 }
2919
2920 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2921                                   enum switchdev_trans trans,
2922                                   int flags, __be32 ip_addr, const u8 *eth_dst)
2923 {
2924         struct rocker *rocker = rocker_port->rocker;
2925         struct rocker_neigh_tbl_entry *entry;
2926         struct rocker_neigh_tbl_entry *found;
2927         unsigned long lock_flags;
2928         __be16 eth_type = htons(ETH_P_IP);
2929         enum rocker_of_dpa_table_id goto_tbl =
2930                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2931         u32 group_id;
2932         u32 priority = 0;
2933         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2934         bool updating;
2935         bool removing;
2936         int err = 0;
2937
2938         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2939         if (!entry)
2940                 return -ENOMEM;
2941
2942         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2943
2944         found = rocker_neigh_tbl_find(rocker, ip_addr);
2945
2946         updating = found && adding;
2947         removing = found && !adding;
2948         adding = !found && adding;
2949
2950         if (adding) {
2951                 entry->ip_addr = ip_addr;
2952                 entry->dev = rocker_port->dev;
2953                 ether_addr_copy(entry->eth_dst, eth_dst);
2954                 entry->ttl_check = true;
2955                 _rocker_neigh_add(rocker, trans, entry);
2956         } else if (removing) {
2957                 memcpy(entry, found, sizeof(*entry));
2958                 _rocker_neigh_del(trans, found);
2959         } else if (updating) {
2960                 _rocker_neigh_update(found, trans, eth_dst, true);
2961                 memcpy(entry, found, sizeof(*entry));
2962         } else {
2963                 err = -ENOENT;
2964         }
2965
2966         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2967
2968         if (err)
2969                 goto err_out;
2970
2971         /* For each active neighbor, we have an L3 unicast group and
2972          * a /32 route to the neighbor, which uses the L3 unicast
2973          * group.  The L3 unicast group can also be referred to by
2974          * other routes' nexthops.
2975          */
2976
2977         err = rocker_group_l3_unicast(rocker_port, trans, flags,
2978                                       entry->index,
2979                                       rocker_port->dev->dev_addr,
2980                                       entry->eth_dst,
2981                                       rocker_port->internal_vlan_id,
2982                                       entry->ttl_check,
2983                                       rocker_port->pport);
2984         if (err) {
2985                 netdev_err(rocker_port->dev,
2986                            "Error (%d) L3 unicast group index %d\n",
2987                            err, entry->index);
2988                 goto err_out;
2989         }
2990
2991         if (adding || removing) {
2992                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2993                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
2994                                                      eth_type, ip_addr,
2995                                                      inet_make_mask(32),
2996                                                      priority, goto_tbl,
2997                                                      group_id, flags);
2998
2999                 if (err)
3000                         netdev_err(rocker_port->dev,
3001                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3002                                    err, &entry->ip_addr, group_id);
3003         }
3004
3005 err_out:
3006         if (!adding)
3007                 rocker_port_kfree(trans, entry);
3008
3009         return err;
3010 }
3011
3012 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3013                                     enum switchdev_trans trans, __be32 ip_addr)
3014 {
3015         struct net_device *dev = rocker_port->dev;
3016         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3017         int err = 0;
3018
3019         if (!n) {
3020                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3021                 if (IS_ERR(n))
3022                         return IS_ERR(n);
3023         }
3024
3025         /* If the neigh is already resolved, then go ahead and
3026          * install the entry, otherwise start the ARP process to
3027          * resolve the neigh.
3028          */
3029
3030         if (n->nud_state & NUD_VALID)
3031                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3032                                              ip_addr, n->ha);
3033         else
3034                 neigh_event_send(n, NULL);
3035
3036         neigh_release(n);
3037         return err;
3038 }
3039
3040 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3041                                enum switchdev_trans trans, int flags,
3042                                __be32 ip_addr, u32 *index)
3043 {
3044         struct rocker *rocker = rocker_port->rocker;
3045         struct rocker_neigh_tbl_entry *entry;
3046         struct rocker_neigh_tbl_entry *found;
3047         unsigned long lock_flags;
3048         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3049         bool updating;
3050         bool removing;
3051         bool resolved = true;
3052         int err = 0;
3053
3054         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3055         if (!entry)
3056                 return -ENOMEM;
3057
3058         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3059
3060         found = rocker_neigh_tbl_find(rocker, ip_addr);
3061         if (found)
3062                 *index = found->index;
3063
3064         updating = found && adding;
3065         removing = found && !adding;
3066         adding = !found && adding;
3067
3068         if (adding) {
3069                 entry->ip_addr = ip_addr;
3070                 entry->dev = rocker_port->dev;
3071                 _rocker_neigh_add(rocker, trans, entry);
3072                 *index = entry->index;
3073                 resolved = false;
3074         } else if (removing) {
3075                 _rocker_neigh_del(trans, found);
3076         } else if (updating) {
3077                 _rocker_neigh_update(found, trans, NULL, false);
3078                 resolved = !is_zero_ether_addr(found->eth_dst);
3079         } else {
3080                 err = -ENOENT;
3081         }
3082
3083         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3084
3085         if (!adding)
3086                 rocker_port_kfree(trans, entry);
3087
3088         if (err)
3089                 return err;
3090
3091         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3092
3093         if (!resolved)
3094                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3095
3096         return err;
3097 }
3098
3099 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3100                                         enum switchdev_trans trans,
3101                                         int flags, __be16 vlan_id)
3102 {
3103         struct rocker_port *p;
3104         const struct rocker *rocker = rocker_port->rocker;
3105         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3106         u32 *group_ids;
3107         u8 group_count = 0;
3108         int err = 0;
3109         int i;
3110
3111         group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3112                                         rocker->port_count, sizeof(u32));
3113         if (!group_ids)
3114                 return -ENOMEM;
3115
3116         /* Adjust the flood group for this VLAN.  The flood group
3117          * references an L2 interface group for each port in this
3118          * VLAN.
3119          */
3120
3121         for (i = 0; i < rocker->port_count; i++) {
3122                 p = rocker->ports[i];
3123                 if (!p)
3124                         continue;
3125                 if (!rocker_port_is_bridged(p))
3126                         continue;
3127                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3128                         group_ids[group_count++] =
3129                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3130                 }
3131         }
3132
3133         /* If there are no bridged ports in this VLAN, we're done */
3134         if (group_count == 0)
3135                 goto no_ports_in_vlan;
3136
3137         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3138                                     group_count, group_ids, group_id);
3139         if (err)
3140                 netdev_err(rocker_port->dev,
3141                            "Error (%d) port VLAN l2 flood group\n", err);
3142
3143 no_ports_in_vlan:
3144         rocker_port_kfree(trans, group_ids);
3145         return err;
3146 }
3147
3148 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3149                                       enum switchdev_trans trans, int flags,
3150                                       __be16 vlan_id, bool pop_vlan)
3151 {
3152         const struct rocker *rocker = rocker_port->rocker;
3153         struct rocker_port *p;
3154         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3155         u32 out_pport;
3156         int ref = 0;
3157         int err;
3158         int i;
3159
3160         /* An L2 interface group for this port in this VLAN, but
3161          * only when port STP state is LEARNING|FORWARDING.
3162          */
3163
3164         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3165             rocker_port->stp_state == BR_STATE_FORWARDING) {
3166                 out_pport = rocker_port->pport;
3167                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3168                                                 vlan_id, out_pport, pop_vlan);
3169                 if (err) {
3170                         netdev_err(rocker_port->dev,
3171                                    "Error (%d) port VLAN l2 group for pport %d\n",
3172                                    err, out_pport);
3173                         return err;
3174                 }
3175         }
3176
3177         /* An L2 interface group for this VLAN to CPU port.
3178          * Add when first port joins this VLAN and destroy when
3179          * last port leaves this VLAN.
3180          */
3181
3182         for (i = 0; i < rocker->port_count; i++) {
3183                 p = rocker->ports[i];
3184                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3185                         ref++;
3186         }
3187
3188         if ((!adding || ref != 1) && (adding || ref != 0))
3189                 return 0;
3190
3191         out_pport = 0;
3192         err = rocker_group_l2_interface(rocker_port, trans, flags,
3193                                         vlan_id, out_pport, pop_vlan);
3194         if (err) {
3195                 netdev_err(rocker_port->dev,
3196                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3197                 return err;
3198         }
3199
3200         return 0;
3201 }
3202
3203 static struct rocker_ctrl {
3204         const u8 *eth_dst;
3205         const u8 *eth_dst_mask;
3206         __be16 eth_type;
3207         bool acl;
3208         bool bridge;
3209         bool term;
3210         bool copy_to_cpu;
3211 } rocker_ctrls[] = {
3212         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3213                 /* pass link local multicast pkts up to CPU for filtering */
3214                 .eth_dst = ll_mac,
3215                 .eth_dst_mask = ll_mask,
3216                 .acl = true,
3217         },
3218         [ROCKER_CTRL_LOCAL_ARP] = {
3219                 /* pass local ARP pkts up to CPU */
3220                 .eth_dst = zero_mac,
3221                 .eth_dst_mask = zero_mac,
3222                 .eth_type = htons(ETH_P_ARP),
3223                 .acl = true,
3224         },
3225         [ROCKER_CTRL_IPV4_MCAST] = {
3226                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3227                 .eth_dst = ipv4_mcast,
3228                 .eth_dst_mask = ipv4_mask,
3229                 .eth_type = htons(ETH_P_IP),
3230                 .term  = true,
3231                 .copy_to_cpu = true,
3232         },
3233         [ROCKER_CTRL_IPV6_MCAST] = {
3234                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3235                 .eth_dst = ipv6_mcast,
3236                 .eth_dst_mask = ipv6_mask,
3237                 .eth_type = htons(ETH_P_IPV6),
3238                 .term  = true,
3239                 .copy_to_cpu = true,
3240         },
3241         [ROCKER_CTRL_DFLT_BRIDGING] = {
3242                 /* flood any pkts on vlan */
3243                 .bridge = true,
3244                 .copy_to_cpu = true,
3245         },
3246 };
3247
3248 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3249                                      enum switchdev_trans trans, int flags,
3250                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3251 {
3252         u32 in_pport = rocker_port->pport;
3253         u32 in_pport_mask = 0xffffffff;
3254         u32 out_pport = 0;
3255         const u8 *eth_src = NULL;
3256         const u8 *eth_src_mask = NULL;
3257         __be16 vlan_id_mask = htons(0xffff);
3258         u8 ip_proto = 0;
3259         u8 ip_proto_mask = 0;
3260         u8 ip_tos = 0;
3261         u8 ip_tos_mask = 0;
3262         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3263         int err;
3264
3265         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3266                                   in_pport, in_pport_mask,
3267                                   eth_src, eth_src_mask,
3268                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3269                                   ctrl->eth_type,
3270                                   vlan_id, vlan_id_mask,
3271                                   ip_proto, ip_proto_mask,
3272                                   ip_tos, ip_tos_mask,
3273                                   group_id);
3274
3275         if (err)
3276                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3277
3278         return err;
3279 }
3280
3281 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3282                                         enum switchdev_trans trans, int flags,
3283                                         const struct rocker_ctrl *ctrl,
3284                                         __be16 vlan_id)
3285 {
3286         enum rocker_of_dpa_table_id goto_tbl =
3287                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3288         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3289         u32 tunnel_id = 0;
3290         int err;
3291
3292         if (!rocker_port_is_bridged(rocker_port))
3293                 return 0;
3294
3295         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3296                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3297                                      vlan_id, tunnel_id,
3298                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3299
3300         if (err)
3301                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3302
3303         return err;
3304 }
3305
3306 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3307                                       enum switchdev_trans trans, int flags,
3308                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3309 {
3310         u32 in_pport_mask = 0xffffffff;
3311         __be16 vlan_id_mask = htons(0xffff);
3312         int err;
3313
3314         if (ntohs(vlan_id) == 0)
3315                 vlan_id = rocker_port->internal_vlan_id;
3316
3317         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3318                                        rocker_port->pport, in_pport_mask,
3319                                        ctrl->eth_type, ctrl->eth_dst,
3320                                        ctrl->eth_dst_mask, vlan_id,
3321                                        vlan_id_mask, ctrl->copy_to_cpu,
3322                                        flags);
3323
3324         if (err)
3325                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3326
3327         return err;
3328 }
3329
3330 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3331                                  enum switchdev_trans trans, int flags,
3332                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3333 {
3334         if (ctrl->acl)
3335                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3336                                                  ctrl, vlan_id);
3337         if (ctrl->bridge)
3338                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3339                                                     ctrl, vlan_id);
3340
3341         if (ctrl->term)
3342                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3343                                                   ctrl, vlan_id);
3344
3345         return -EOPNOTSUPP;
3346 }
3347
3348 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3349                                      enum switchdev_trans trans, int flags,
3350                                      __be16 vlan_id)
3351 {
3352         int err = 0;
3353         int i;
3354
3355         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3356                 if (rocker_port->ctrls[i]) {
3357                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3358                                                     &rocker_ctrls[i], vlan_id);
3359                         if (err)
3360                                 return err;
3361                 }
3362         }
3363
3364         return err;
3365 }
3366
3367 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3368                             enum switchdev_trans trans, int flags,
3369                             const struct rocker_ctrl *ctrl)
3370 {
3371         u16 vid;
3372         int err = 0;
3373
3374         for (vid = 1; vid < VLAN_N_VID; vid++) {
3375                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3376                         continue;
3377                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3378                                             ctrl, htons(vid));
3379                 if (err)
3380                         break;
3381         }
3382
3383         return err;
3384 }
3385
3386 static int rocker_port_vlan(struct rocker_port *rocker_port,
3387                             enum switchdev_trans trans, int flags, u16 vid)
3388 {
3389         enum rocker_of_dpa_table_id goto_tbl =
3390                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3391         u32 in_pport = rocker_port->pport;
3392         __be16 vlan_id = htons(vid);
3393         __be16 vlan_id_mask = htons(0xffff);
3394         __be16 internal_vlan_id;
3395         bool untagged;
3396         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3397         int err;
3398
3399         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3400
3401         if (adding && test_bit(ntohs(internal_vlan_id),
3402                                rocker_port->vlan_bitmap))
3403                         return 0; /* already added */
3404         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3405                                       rocker_port->vlan_bitmap))
3406                         return 0; /* already removed */
3407
3408         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3409
3410         if (adding) {
3411                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3412                                                 internal_vlan_id);
3413                 if (err) {
3414                         netdev_err(rocker_port->dev,
3415                                    "Error (%d) port ctrl vlan add\n", err);
3416                         goto err_out;
3417                 }
3418         }
3419
3420         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3421                                          internal_vlan_id, untagged);
3422         if (err) {
3423                 netdev_err(rocker_port->dev,
3424                            "Error (%d) port VLAN l2 groups\n", err);
3425                 goto err_out;
3426         }
3427
3428         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3429                                            internal_vlan_id);
3430         if (err) {
3431                 netdev_err(rocker_port->dev,
3432                            "Error (%d) port VLAN l2 flood group\n", err);
3433                 goto err_out;
3434         }
3435
3436         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3437                                    in_pport, vlan_id, vlan_id_mask,
3438                                    goto_tbl, untagged, internal_vlan_id);
3439         if (err)
3440                 netdev_err(rocker_port->dev,
3441                            "Error (%d) port VLAN table\n", err);
3442
3443 err_out:
3444         if (trans == SWITCHDEV_TRANS_PREPARE)
3445                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3446
3447         return err;
3448 }
3449
3450 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3451                               enum switchdev_trans trans, int flags)
3452 {
3453         enum rocker_of_dpa_table_id goto_tbl;
3454         u32 in_pport;
3455         u32 in_pport_mask;
3456         int err;
3457
3458         /* Normal Ethernet Frames.  Matches pkts from any local physical
3459          * ports.  Goto VLAN tbl.
3460          */
3461
3462         in_pport = 0;
3463         in_pport_mask = 0xffff0000;
3464         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3465
3466         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3467                                       in_pport, in_pport_mask,
3468                                       goto_tbl);
3469         if (err)
3470                 netdev_err(rocker_port->dev,
3471                            "Error (%d) ingress port table entry\n", err);
3472
3473         return err;
3474 }
3475
3476 struct rocker_fdb_learn_work {
3477         struct work_struct work;
3478         struct rocker_port *rocker_port;
3479         enum switchdev_trans trans;
3480         int flags;
3481         u8 addr[ETH_ALEN];
3482         u16 vid;
3483 };
3484
3485 static void rocker_port_fdb_learn_work(struct work_struct *work)
3486 {
3487         const struct rocker_fdb_learn_work *lw =
3488                 container_of(work, struct rocker_fdb_learn_work, work);
3489         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3490         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3491         struct switchdev_notifier_fdb_info info;
3492
3493         info.addr = lw->addr;
3494         info.vid = lw->vid;
3495
3496         if (learned && removing)
3497                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3498                                          lw->rocker_port->dev, &info.info);
3499         else if (learned && !removing)
3500                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3501                                          lw->rocker_port->dev, &info.info);
3502
3503         rocker_port_kfree(lw->trans, work);
3504 }
3505
3506 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3507                                  enum switchdev_trans trans, int flags,
3508                                  const u8 *addr, __be16 vlan_id)
3509 {
3510         struct rocker_fdb_learn_work *lw;
3511         enum rocker_of_dpa_table_id goto_tbl =
3512                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3513         u32 out_pport = rocker_port->pport;
3514         u32 tunnel_id = 0;
3515         u32 group_id = ROCKER_GROUP_NONE;
3516         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3517         bool copy_to_cpu = false;
3518         int err;
3519
3520         if (rocker_port_is_bridged(rocker_port))
3521                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3522
3523         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3524                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3525                                              NULL, vlan_id, tunnel_id, goto_tbl,
3526                                              group_id, copy_to_cpu);
3527                 if (err)
3528                         return err;
3529         }
3530
3531         if (!syncing)
3532                 return 0;
3533
3534         if (!rocker_port_is_bridged(rocker_port))
3535                 return 0;
3536
3537         lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3538         if (!lw)
3539                 return -ENOMEM;
3540
3541         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3542
3543         lw->rocker_port = rocker_port;
3544         lw->trans = trans;
3545         lw->flags = flags;
3546         ether_addr_copy(lw->addr, addr);
3547         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3548
3549         if (trans == SWITCHDEV_TRANS_PREPARE)
3550                 rocker_port_kfree(trans, lw);
3551         else
3552                 schedule_work(&lw->work);
3553
3554         return 0;
3555 }
3556
3557 static struct rocker_fdb_tbl_entry *
3558 rocker_fdb_tbl_find(const struct rocker *rocker,
3559                     const struct rocker_fdb_tbl_entry *match)
3560 {
3561         struct rocker_fdb_tbl_entry *found;
3562
3563         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3564                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3565                         return found;
3566
3567         return NULL;
3568 }
3569
3570 static int rocker_port_fdb(struct rocker_port *rocker_port,
3571                            enum switchdev_trans trans,
3572                            const unsigned char *addr,
3573                            __be16 vlan_id, int flags)
3574 {
3575         struct rocker *rocker = rocker_port->rocker;
3576         struct rocker_fdb_tbl_entry *fdb;
3577         struct rocker_fdb_tbl_entry *found;
3578         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3579         unsigned long lock_flags;
3580
3581         fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3582         if (!fdb)
3583                 return -ENOMEM;
3584
3585         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3586         fdb->key.pport = rocker_port->pport;
3587         ether_addr_copy(fdb->key.addr, addr);
3588         fdb->key.vlan_id = vlan_id;
3589         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3590
3591         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3592
3593         found = rocker_fdb_tbl_find(rocker, fdb);
3594
3595         if (removing && found) {
3596                 rocker_port_kfree(trans, fdb);
3597                 if (trans != SWITCHDEV_TRANS_PREPARE)
3598                         hash_del(&found->entry);
3599         } else if (!removing && !found) {
3600                 if (trans != SWITCHDEV_TRANS_PREPARE)
3601                         hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3602         }
3603
3604         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3605
3606         /* Check if adding and already exists, or removing and can't find */
3607         if (!found != !removing) {
3608                 rocker_port_kfree(trans, fdb);
3609                 if (!found && removing)
3610                         return 0;
3611                 /* Refreshing existing to update aging timers */
3612                 flags |= ROCKER_OP_FLAG_REFRESH;
3613         }
3614
3615         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3616 }
3617
3618 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3619                                  enum switchdev_trans trans, int flags)
3620 {
3621         struct rocker *rocker = rocker_port->rocker;
3622         struct rocker_fdb_tbl_entry *found;
3623         unsigned long lock_flags;
3624         struct hlist_node *tmp;
3625         int bkt;
3626         int err = 0;
3627
3628         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3629             rocker_port->stp_state == BR_STATE_FORWARDING)
3630                 return 0;
3631
3632         flags |= ROCKER_OP_FLAG_REMOVE;
3633
3634         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3635
3636         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3637                 if (found->key.pport != rocker_port->pport)
3638                         continue;
3639                 if (!found->learned)
3640                         continue;
3641                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3642                                             found->key.addr,
3643                                             found->key.vlan_id);
3644                 if (err)
3645                         goto err_out;
3646                 if (trans != SWITCHDEV_TRANS_PREPARE)
3647                         hash_del(&found->entry);
3648         }
3649
3650 err_out:
3651         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3652
3653         return err;
3654 }
3655
3656 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3657                                   enum switchdev_trans trans, int flags,
3658                                   __be16 vlan_id)
3659 {
3660         u32 in_pport_mask = 0xffffffff;
3661         __be16 eth_type;
3662         const u8 *dst_mac_mask = ff_mac;
3663         __be16 vlan_id_mask = htons(0xffff);
3664         bool copy_to_cpu = false;
3665         int err;
3666
3667         if (ntohs(vlan_id) == 0)
3668                 vlan_id = rocker_port->internal_vlan_id;
3669
3670         eth_type = htons(ETH_P_IP);
3671         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3672                                        rocker_port->pport, in_pport_mask,
3673                                        eth_type, rocker_port->dev->dev_addr,
3674                                        dst_mac_mask, vlan_id, vlan_id_mask,
3675                                        copy_to_cpu, flags);
3676         if (err)
3677                 return err;
3678
3679         eth_type = htons(ETH_P_IPV6);
3680         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3681                                        rocker_port->pport, in_pport_mask,
3682                                        eth_type, rocker_port->dev->dev_addr,
3683                                        dst_mac_mask, vlan_id, vlan_id_mask,
3684                                        copy_to_cpu, flags);
3685
3686         return err;
3687 }
3688
3689 static int rocker_port_fwding(struct rocker_port *rocker_port,
3690                               enum switchdev_trans trans, int flags)
3691 {
3692         bool pop_vlan;
3693         u32 out_pport;
3694         __be16 vlan_id;
3695         u16 vid;
3696         int err;
3697
3698         /* Port will be forwarding-enabled if its STP state is LEARNING
3699          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3700          * port STP state.  Use L2 interface group on port VLANs as a way
3701          * to toggle port forwarding: if forwarding is disabled, L2
3702          * interface group will not exist.
3703          */
3704
3705         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3706             rocker_port->stp_state != BR_STATE_FORWARDING)
3707                 flags |= ROCKER_OP_FLAG_REMOVE;
3708
3709         out_pport = rocker_port->pport;
3710         for (vid = 1; vid < VLAN_N_VID; vid++) {
3711                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3712                         continue;
3713                 vlan_id = htons(vid);
3714                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3715                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3716                                                 vlan_id, out_pport, pop_vlan);
3717                 if (err) {
3718                         netdev_err(rocker_port->dev,
3719                                    "Error (%d) port VLAN l2 group for pport %d\n",
3720                                    err, out_pport);
3721                         return err;
3722                 }
3723         }
3724
3725         return 0;
3726 }
3727
3728 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3729                                   enum switchdev_trans trans, int flags,
3730                                   u8 state)
3731 {
3732         bool want[ROCKER_CTRL_MAX] = { 0, };
3733         bool prev_ctrls[ROCKER_CTRL_MAX];
3734         u8 prev_state;
3735         int err;
3736         int i;
3737
3738         if (trans == SWITCHDEV_TRANS_PREPARE) {
3739                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3740                 prev_state = rocker_port->stp_state;
3741         }
3742
3743         if (rocker_port->stp_state == state)
3744                 return 0;
3745
3746         rocker_port->stp_state = state;
3747
3748         switch (state) {
3749         case BR_STATE_DISABLED:
3750                 /* port is completely disabled */
3751                 break;
3752         case BR_STATE_LISTENING:
3753         case BR_STATE_BLOCKING:
3754                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3755                 break;
3756         case BR_STATE_LEARNING:
3757         case BR_STATE_FORWARDING:
3758                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3759                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3760                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3761                 if (rocker_port_is_bridged(rocker_port))
3762                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3763                 else
3764                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3765                 break;
3766         }
3767
3768         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3769                 if (want[i] != rocker_port->ctrls[i]) {
3770                         int ctrl_flags = flags |
3771                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3772                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3773                                                &rocker_ctrls[i]);
3774                         if (err)
3775                                 goto err_out;
3776                         rocker_port->ctrls[i] = want[i];
3777                 }
3778         }
3779
3780         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3781         if (err)
3782                 goto err_out;
3783
3784         err = rocker_port_fwding(rocker_port, trans, flags);
3785
3786 err_out:
3787         if (trans == SWITCHDEV_TRANS_PREPARE) {
3788                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3789                 rocker_port->stp_state = prev_state;
3790         }
3791
3792         return err;
3793 }
3794
3795 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3796                                   enum switchdev_trans trans, int flags)
3797 {
3798         if (rocker_port_is_bridged(rocker_port))
3799                 /* bridge STP will enable port */
3800                 return 0;
3801
3802         /* port is not bridged, so simulate going to FORWARDING state */
3803         return rocker_port_stp_update(rocker_port, trans, flags,
3804                                       BR_STATE_FORWARDING);
3805 }
3806
3807 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3808                                    enum switchdev_trans trans, int flags)
3809 {
3810         if (rocker_port_is_bridged(rocker_port))
3811                 /* bridge STP will disable port */
3812                 return 0;
3813
3814         /* port is not bridged, so simulate going to DISABLED state */
3815         return rocker_port_stp_update(rocker_port, trans, flags,
3816                                       BR_STATE_DISABLED);
3817 }
3818
3819 static struct rocker_internal_vlan_tbl_entry *
3820 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3821 {
3822         struct rocker_internal_vlan_tbl_entry *found;
3823
3824         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3825                                entry, ifindex) {
3826                 if (found->ifindex == ifindex)
3827                         return found;
3828         }
3829
3830         return NULL;
3831 }
3832
3833 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3834                                                int ifindex)
3835 {
3836         struct rocker *rocker = rocker_port->rocker;
3837         struct rocker_internal_vlan_tbl_entry *entry;
3838         struct rocker_internal_vlan_tbl_entry *found;
3839         unsigned long lock_flags;
3840         int i;
3841
3842         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3843         if (!entry)
3844                 return 0;
3845
3846         entry->ifindex = ifindex;
3847
3848         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3849
3850         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3851         if (found) {
3852                 kfree(entry);
3853                 goto found;
3854         }
3855
3856         found = entry;
3857         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3858
3859         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3860                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3861                         continue;
3862                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3863                 goto found;
3864         }
3865
3866         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3867
3868 found:
3869         found->ref_count++;
3870         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3871
3872         return found->vlan_id;
3873 }
3874
3875 static void
3876 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3877                                  int ifindex)
3878 {
3879         struct rocker *rocker = rocker_port->rocker;
3880         struct rocker_internal_vlan_tbl_entry *found;
3881         unsigned long lock_flags;
3882         unsigned long bit;
3883
3884         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3885
3886         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3887         if (!found) {
3888                 netdev_err(rocker_port->dev,
3889                            "ifindex (%d) not found in internal VLAN tbl\n",
3890                            ifindex);
3891                 goto not_found;
3892         }
3893
3894         if (--found->ref_count <= 0) {
3895                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3896                 clear_bit(bit, rocker->internal_vlan_bitmap);
3897                 hash_del(&found->entry);
3898                 kfree(found);
3899         }
3900
3901 not_found:
3902         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3903 }
3904
3905 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3906                                 enum switchdev_trans trans, __be32 dst,
3907                                 int dst_len, const struct fib_info *fi,
3908                                 u32 tb_id, int flags)
3909 {
3910         const struct fib_nh *nh;
3911         __be16 eth_type = htons(ETH_P_IP);
3912         __be32 dst_mask = inet_make_mask(dst_len);
3913         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3914         u32 priority = fi->fib_priority;
3915         enum rocker_of_dpa_table_id goto_tbl =
3916                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3917         u32 group_id;
3918         bool nh_on_port;
3919         bool has_gw;
3920         u32 index;
3921         int err;
3922
3923         /* XXX support ECMP */
3924
3925         nh = fi->fib_nh;
3926         nh_on_port = (fi->fib_dev == rocker_port->dev);
3927         has_gw = !!nh->nh_gw;
3928
3929         if (has_gw && nh_on_port) {
3930                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3931                                           nh->nh_gw, &index);
3932                 if (err)
3933                         return err;
3934
3935                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3936         } else {
3937                 /* Send to CPU for processing */
3938                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3939         }
3940
3941         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3942                                              dst_mask, priority, goto_tbl,
3943                                              group_id, flags);
3944         if (err)
3945                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3946                            err, &dst);
3947
3948         return err;
3949 }
3950
3951 /*****************
3952  * Net device ops
3953  *****************/
3954
3955 static int rocker_port_open(struct net_device *dev)
3956 {
3957         struct rocker_port *rocker_port = netdev_priv(dev);
3958         int err;
3959
3960         err = rocker_port_dma_rings_init(rocker_port);
3961         if (err)
3962                 return err;
3963
3964         err = request_irq(rocker_msix_tx_vector(rocker_port),
3965                           rocker_tx_irq_handler, 0,
3966                           rocker_driver_name, rocker_port);
3967         if (err) {
3968                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3969                 goto err_request_tx_irq;
3970         }
3971
3972         err = request_irq(rocker_msix_rx_vector(rocker_port),
3973                           rocker_rx_irq_handler, 0,
3974                           rocker_driver_name, rocker_port);
3975         if (err) {
3976                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3977                 goto err_request_rx_irq;
3978         }
3979
3980         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
3981         if (err)
3982                 goto err_fwd_enable;
3983
3984         napi_enable(&rocker_port->napi_tx);
3985         napi_enable(&rocker_port->napi_rx);
3986         rocker_port_set_enable(rocker_port, true);
3987         netif_start_queue(dev);
3988         return 0;
3989
3990 err_fwd_enable:
3991         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3992 err_request_rx_irq:
3993         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3994 err_request_tx_irq:
3995         rocker_port_dma_rings_fini(rocker_port);
3996         return err;
3997 }
3998
3999 static int rocker_port_stop(struct net_device *dev)
4000 {
4001         struct rocker_port *rocker_port = netdev_priv(dev);
4002
4003         netif_stop_queue(dev);
4004         rocker_port_set_enable(rocker_port, false);
4005         napi_disable(&rocker_port->napi_rx);
4006         napi_disable(&rocker_port->napi_tx);
4007         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE,
4008                                 ROCKER_OP_FLAG_NOWAIT);
4009         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4010         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4011         rocker_port_dma_rings_fini(rocker_port);
4012
4013         return 0;
4014 }
4015
4016 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4017                                        const struct rocker_desc_info *desc_info)
4018 {
4019         const struct rocker *rocker = rocker_port->rocker;
4020         struct pci_dev *pdev = rocker->pdev;
4021         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4022         struct rocker_tlv *attr;
4023         int rem;
4024
4025         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4026         if (!attrs[ROCKER_TLV_TX_FRAGS])
4027                 return;
4028         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4029                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4030                 dma_addr_t dma_handle;
4031                 size_t len;
4032
4033                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4034                         continue;
4035                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4036                                         attr);
4037                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4038                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4039                         continue;
4040                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4041                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4042                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4043         }
4044 }
4045
4046 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4047                                        struct rocker_desc_info *desc_info,
4048                                        char *buf, size_t buf_len)
4049 {
4050         const struct rocker *rocker = rocker_port->rocker;
4051         struct pci_dev *pdev = rocker->pdev;
4052         dma_addr_t dma_handle;
4053         struct rocker_tlv *frag;
4054
4055         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4056         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4057                 if (net_ratelimit())
4058                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4059                 return -EIO;
4060         }
4061         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4062         if (!frag)
4063                 goto unmap_frag;
4064         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4065                                dma_handle))
4066                 goto nest_cancel;
4067         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4068                                buf_len))
4069                 goto nest_cancel;
4070         rocker_tlv_nest_end(desc_info, frag);
4071         return 0;
4072
4073 nest_cancel:
4074         rocker_tlv_nest_cancel(desc_info, frag);
4075 unmap_frag:
4076         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4077         return -EMSGSIZE;
4078 }
4079
4080 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4081 {
4082         struct rocker_port *rocker_port = netdev_priv(dev);
4083         struct rocker *rocker = rocker_port->rocker;
4084         struct rocker_desc_info *desc_info;
4085         struct rocker_tlv *frags;
4086         int i;
4087         int err;
4088
4089         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4090         if (unlikely(!desc_info)) {
4091                 if (net_ratelimit())
4092                         netdev_err(dev, "tx ring full when queue awake\n");
4093                 return NETDEV_TX_BUSY;
4094         }
4095
4096         rocker_desc_cookie_ptr_set(desc_info, skb);
4097
4098         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4099         if (!frags)
4100                 goto out;
4101         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4102                                           skb->data, skb_headlen(skb));
4103         if (err)
4104                 goto nest_cancel;
4105         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4106                 goto nest_cancel;
4107
4108         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4109                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4110
4111                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4112                                                   skb_frag_address(frag),
4113                                                   skb_frag_size(frag));
4114                 if (err)
4115                         goto unmap_frags;
4116         }
4117         rocker_tlv_nest_end(desc_info, frags);
4118
4119         rocker_desc_gen_clear(desc_info);
4120         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4121
4122         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4123         if (!desc_info)
4124                 netif_stop_queue(dev);
4125
4126         return NETDEV_TX_OK;
4127
4128 unmap_frags:
4129         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4130 nest_cancel:
4131         rocker_tlv_nest_cancel(desc_info, frags);
4132 out:
4133         dev_kfree_skb(skb);
4134         dev->stats.tx_dropped++;
4135
4136         return NETDEV_TX_OK;
4137 }
4138
4139 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4140 {
4141         struct sockaddr *addr = p;
4142         struct rocker_port *rocker_port = netdev_priv(dev);
4143         int err;
4144
4145         if (!is_valid_ether_addr(addr->sa_data))
4146                 return -EADDRNOTAVAIL;
4147
4148         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4149         if (err)
4150                 return err;
4151         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4152         return 0;
4153 }
4154
4155 static int rocker_port_get_phys_port_name(struct net_device *dev,
4156                                           char *buf, size_t len)
4157 {
4158         struct rocker_port *rocker_port = netdev_priv(dev);
4159         struct port_name name = { .buf = buf, .len = len };
4160         int err;
4161
4162         err = rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4163                               rocker_cmd_get_port_settings_prep, NULL,
4164                               rocker_cmd_get_port_settings_phys_name_proc,
4165                               &name);
4166
4167         return err ? -EOPNOTSUPP : 0;
4168 }
4169
4170 static const struct net_device_ops rocker_port_netdev_ops = {
4171         .ndo_open                       = rocker_port_open,
4172         .ndo_stop                       = rocker_port_stop,
4173         .ndo_start_xmit                 = rocker_port_xmit,
4174         .ndo_set_mac_address            = rocker_port_set_mac_address,
4175         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4176         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4177         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4178         .ndo_fdb_add                    = switchdev_port_fdb_add,
4179         .ndo_fdb_del                    = switchdev_port_fdb_del,
4180         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4181         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4182 };
4183
4184 /********************
4185  * swdev interface
4186  ********************/
4187
4188 static int rocker_port_attr_get(struct net_device *dev,
4189                                 struct switchdev_attr *attr)
4190 {
4191         const struct rocker_port *rocker_port = netdev_priv(dev);
4192         const struct rocker *rocker = rocker_port->rocker;
4193
4194         switch (attr->id) {
4195         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4196                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4197                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4198                 break;
4199         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4200                 attr->u.brport_flags = rocker_port->brport_flags;
4201                 break;
4202         default:
4203                 return -EOPNOTSUPP;
4204         }
4205
4206         return 0;
4207 }
4208
4209 static void rocker_port_trans_abort(const struct rocker_port *rocker_port)
4210 {
4211         struct list_head *mem, *tmp;
4212
4213         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4214                 list_del(mem);
4215                 kfree(mem);
4216         }
4217 }
4218
4219 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4220                                         enum switchdev_trans trans,
4221                                         unsigned long brport_flags)
4222 {
4223         unsigned long orig_flags;
4224         int err = 0;
4225
4226         orig_flags = rocker_port->brport_flags;
4227         rocker_port->brport_flags = brport_flags;
4228         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4229                 err = rocker_port_set_learning(rocker_port, trans);
4230
4231         if (trans == SWITCHDEV_TRANS_PREPARE)
4232                 rocker_port->brport_flags = orig_flags;
4233
4234         return err;
4235 }
4236
4237 static int rocker_port_attr_set(struct net_device *dev,
4238                                 struct switchdev_attr *attr)
4239 {
4240         struct rocker_port *rocker_port = netdev_priv(dev);
4241         int err = 0;
4242
4243         switch (attr->trans) {
4244         case SWITCHDEV_TRANS_PREPARE:
4245                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4246                 break;
4247         case SWITCHDEV_TRANS_ABORT:
4248                 rocker_port_trans_abort(rocker_port);
4249                 return 0;
4250         default:
4251                 break;
4252         }
4253
4254         switch (attr->id) {
4255         case SWITCHDEV_ATTR_PORT_STP_STATE:
4256                 err = rocker_port_stp_update(rocker_port, attr->trans,
4257                                              ROCKER_OP_FLAG_NOWAIT,
4258                                              attr->u.stp_state);
4259                 break;
4260         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4261                 err = rocker_port_brport_flags_set(rocker_port, attr->trans,
4262                                                    attr->u.brport_flags);
4263                 break;
4264         default:
4265                 err = -EOPNOTSUPP;
4266                 break;
4267         }
4268
4269         return err;
4270 }
4271
4272 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4273                                 enum switchdev_trans trans, u16 vid, u16 flags)
4274 {
4275         int err;
4276
4277         /* XXX deal with flags for PVID and untagged */
4278
4279         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4280         if (err)
4281                 return err;
4282
4283         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4284         if (err)
4285                 rocker_port_vlan(rocker_port, trans,
4286                                  ROCKER_OP_FLAG_REMOVE, vid);
4287
4288         return err;
4289 }
4290
4291 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4292                                  enum switchdev_trans trans,
4293                                  const struct switchdev_obj_vlan *vlan)
4294 {
4295         u16 vid;
4296         int err;
4297
4298         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4299                 err = rocker_port_vlan_add(rocker_port, trans,
4300                                            vid, vlan->flags);
4301                 if (err)
4302                         return err;
4303         }
4304
4305         return 0;
4306 }
4307
4308 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4309                                enum switchdev_trans trans,
4310                                const struct switchdev_obj_fdb *fdb)
4311 {
4312         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4313         int flags = 0;
4314
4315         if (!rocker_port_is_bridged(rocker_port))
4316                 return -EINVAL;
4317
4318         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4319 }
4320
4321 static int rocker_port_obj_add(struct net_device *dev,
4322                                struct switchdev_obj *obj)
4323 {
4324         struct rocker_port *rocker_port = netdev_priv(dev);
4325         const struct switchdev_obj_ipv4_fib *fib4;
4326         int err = 0;
4327
4328         switch (obj->trans) {
4329         case SWITCHDEV_TRANS_PREPARE:
4330                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4331                 break;
4332         case SWITCHDEV_TRANS_ABORT:
4333                 rocker_port_trans_abort(rocker_port);
4334                 return 0;
4335         default:
4336                 break;
4337         }
4338
4339         switch (obj->id) {
4340         case SWITCHDEV_OBJ_PORT_VLAN:
4341                 err = rocker_port_vlans_add(rocker_port, obj->trans,
4342                                             &obj->u.vlan);
4343                 break;
4344         case SWITCHDEV_OBJ_IPV4_FIB:
4345                 fib4 = &obj->u.ipv4_fib;
4346                 err = rocker_port_fib_ipv4(rocker_port, obj->trans,
4347                                            htonl(fib4->dst), fib4->dst_len,
4348                                            fib4->fi, fib4->tb_id, 0);
4349                 break;
4350         case SWITCHDEV_OBJ_PORT_FDB:
4351                 err = rocker_port_fdb_add(rocker_port, obj->trans, &obj->u.fdb);
4352                 break;
4353         default:
4354                 err = -EOPNOTSUPP;
4355                 break;
4356         }
4357
4358         return err;
4359 }
4360
4361 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4362                                 u16 vid, u16 flags)
4363 {
4364         int err;
4365
4366         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4367                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4368         if (err)
4369                 return err;
4370
4371         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4372                                 ROCKER_OP_FLAG_REMOVE, vid);
4373 }
4374
4375 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4376                                  const struct switchdev_obj_vlan *vlan)
4377 {
4378         u16 vid;
4379         int err;
4380
4381         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4382                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4383                 if (err)
4384                         return err;
4385         }
4386
4387         return 0;
4388 }
4389
4390 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4391                                enum switchdev_trans trans,
4392                                const struct switchdev_obj_fdb *fdb)
4393 {
4394         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4395         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
4396
4397         if (!rocker_port_is_bridged(rocker_port))
4398                 return -EINVAL;
4399
4400         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4401 }
4402
4403 static int rocker_port_obj_del(struct net_device *dev,
4404                                struct switchdev_obj *obj)
4405 {
4406         struct rocker_port *rocker_port = netdev_priv(dev);
4407         const struct switchdev_obj_ipv4_fib *fib4;
4408         int err = 0;
4409
4410         switch (obj->id) {
4411         case SWITCHDEV_OBJ_PORT_VLAN:
4412                 err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
4413                 break;
4414         case SWITCHDEV_OBJ_IPV4_FIB:
4415                 fib4 = &obj->u.ipv4_fib;
4416                 err = rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4417                                            htonl(fib4->dst), fib4->dst_len,
4418                                            fib4->fi, fib4->tb_id,
4419                                            ROCKER_OP_FLAG_REMOVE);
4420                 break;
4421         case SWITCHDEV_OBJ_PORT_FDB:
4422                 err = rocker_port_fdb_del(rocker_port, obj->trans, &obj->u.fdb);
4423                 break;
4424         default:
4425                 err = -EOPNOTSUPP;
4426                 break;
4427         }
4428
4429         return err;
4430 }
4431
4432 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4433                                 struct switchdev_obj *obj)
4434 {
4435         struct rocker *rocker = rocker_port->rocker;
4436         struct switchdev_obj_fdb *fdb = &obj->u.fdb;
4437         struct rocker_fdb_tbl_entry *found;
4438         struct hlist_node *tmp;
4439         unsigned long lock_flags;
4440         int bkt;
4441         int err = 0;
4442
4443         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4444         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4445                 if (found->key.pport != rocker_port->pport)
4446                         continue;
4447                 fdb->addr = found->key.addr;
4448                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4449                                                    found->key.vlan_id);
4450                 err = obj->cb(rocker_port->dev, obj);
4451                 if (err)
4452                         break;
4453         }
4454         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4455
4456         return err;
4457 }
4458
4459 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4460                                  struct switchdev_obj *obj)
4461 {
4462         struct switchdev_obj_vlan *vlan = &obj->u.vlan;
4463         u16 vid;
4464         int err = 0;
4465
4466         for (vid = 1; vid < VLAN_N_VID; vid++) {
4467                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4468                         continue;
4469                 vlan->flags = 0;
4470                 if (rocker_vlan_id_is_internal(htons(vid)))
4471                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4472                 vlan->vid_begin = vlan->vid_end = vid;
4473                 err = obj->cb(rocker_port->dev, obj);
4474                 if (err)
4475                         break;
4476         }
4477
4478         return err;
4479 }
4480
4481 static int rocker_port_obj_dump(struct net_device *dev,
4482                                 struct switchdev_obj *obj)
4483 {
4484         const struct rocker_port *rocker_port = netdev_priv(dev);
4485         int err = 0;
4486
4487         switch (obj->id) {
4488         case SWITCHDEV_OBJ_PORT_FDB:
4489                 err = rocker_port_fdb_dump(rocker_port, obj);
4490                 break;
4491         case SWITCHDEV_OBJ_PORT_VLAN:
4492                 err = rocker_port_vlan_dump(rocker_port, obj);
4493                 break;
4494         default:
4495                 err = -EOPNOTSUPP;
4496                 break;
4497         }
4498
4499         return err;
4500 }
4501
4502 static const struct switchdev_ops rocker_port_switchdev_ops = {
4503         .switchdev_port_attr_get        = rocker_port_attr_get,
4504         .switchdev_port_attr_set        = rocker_port_attr_set,
4505         .switchdev_port_obj_add         = rocker_port_obj_add,
4506         .switchdev_port_obj_del         = rocker_port_obj_del,
4507         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4508 };
4509
4510 /********************
4511  * ethtool interface
4512  ********************/
4513
4514 static int rocker_port_get_settings(struct net_device *dev,
4515                                     struct ethtool_cmd *ecmd)
4516 {
4517         struct rocker_port *rocker_port = netdev_priv(dev);
4518
4519         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4520 }
4521
4522 static int rocker_port_set_settings(struct net_device *dev,
4523                                     struct ethtool_cmd *ecmd)
4524 {
4525         struct rocker_port *rocker_port = netdev_priv(dev);
4526
4527         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4528 }
4529
4530 static void rocker_port_get_drvinfo(struct net_device *dev,
4531                                     struct ethtool_drvinfo *drvinfo)
4532 {
4533         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4534         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4535 }
4536
4537 static struct rocker_port_stats {
4538         char str[ETH_GSTRING_LEN];
4539         int type;
4540 } rocker_port_stats[] = {
4541         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4542         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4543         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4544         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4545
4546         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4547         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4548         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4549         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4550 };
4551
4552 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4553
4554 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4555                                     u8 *data)
4556 {
4557         u8 *p = data;
4558         int i;
4559
4560         switch (stringset) {
4561         case ETH_SS_STATS:
4562                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4563                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4564                         p += ETH_GSTRING_LEN;
4565                 }
4566                 break;
4567         }
4568 }
4569
4570 static int
4571 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4572                                struct rocker_desc_info *desc_info,
4573                                void *priv)
4574 {
4575         struct rocker_tlv *cmd_stats;
4576
4577         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4578                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4579                 return -EMSGSIZE;
4580
4581         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4582         if (!cmd_stats)
4583                 return -EMSGSIZE;
4584
4585         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4586                                rocker_port->pport))
4587                 return -EMSGSIZE;
4588
4589         rocker_tlv_nest_end(desc_info, cmd_stats);
4590
4591         return 0;
4592 }
4593
4594 static int
4595 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4596                                        const struct rocker_desc_info *desc_info,
4597                                        void *priv)
4598 {
4599         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4600         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4601         const struct rocker_tlv *pattr;
4602         u32 pport;
4603         u64 *data = priv;
4604         int i;
4605
4606         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4607
4608         if (!attrs[ROCKER_TLV_CMD_INFO])
4609                 return -EIO;
4610
4611         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4612                                 attrs[ROCKER_TLV_CMD_INFO]);
4613
4614         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4615                 return -EIO;
4616
4617         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4618         if (pport != rocker_port->pport)
4619                 return -EIO;
4620
4621         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4622                 pattr = stats_attrs[rocker_port_stats[i].type];
4623                 if (!pattr)
4624                         continue;
4625
4626                 data[i] = rocker_tlv_get_u64(pattr);
4627         }
4628
4629         return 0;
4630 }
4631
4632 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4633                                              void *priv)
4634 {
4635         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4636                                rocker_cmd_get_port_stats_prep, NULL,
4637                                rocker_cmd_get_port_stats_ethtool_proc,
4638                                priv);
4639 }
4640
4641 static void rocker_port_get_stats(struct net_device *dev,
4642                                   struct ethtool_stats *stats, u64 *data)
4643 {
4644         struct rocker_port *rocker_port = netdev_priv(dev);
4645
4646         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4647                 int i;
4648
4649                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4650                         data[i] = 0;
4651         }
4652 }
4653
4654 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4655 {
4656         switch (sset) {
4657         case ETH_SS_STATS:
4658                 return ROCKER_PORT_STATS_LEN;
4659         default:
4660                 return -EOPNOTSUPP;
4661         }
4662 }
4663
4664 static const struct ethtool_ops rocker_port_ethtool_ops = {
4665         .get_settings           = rocker_port_get_settings,
4666         .set_settings           = rocker_port_set_settings,
4667         .get_drvinfo            = rocker_port_get_drvinfo,
4668         .get_link               = ethtool_op_get_link,
4669         .get_strings            = rocker_port_get_strings,
4670         .get_ethtool_stats      = rocker_port_get_stats,
4671         .get_sset_count         = rocker_port_get_sset_count,
4672 };
4673
4674 /*****************
4675  * NAPI interface
4676  *****************/
4677
4678 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4679 {
4680         return container_of(napi, struct rocker_port, napi_tx);
4681 }
4682
4683 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4684 {
4685         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4686         const struct rocker *rocker = rocker_port->rocker;
4687         const struct rocker_desc_info *desc_info;
4688         u32 credits = 0;
4689         int err;
4690
4691         /* Cleanup tx descriptors */
4692         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4693                 struct sk_buff *skb;
4694
4695                 err = rocker_desc_err(desc_info);
4696                 if (err && net_ratelimit())
4697                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4698                                    err);
4699                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4700
4701                 skb = rocker_desc_cookie_ptr_get(desc_info);
4702                 if (err == 0) {
4703                         rocker_port->dev->stats.tx_packets++;
4704                         rocker_port->dev->stats.tx_bytes += skb->len;
4705                 } else {
4706                         rocker_port->dev->stats.tx_errors++;
4707                 }
4708
4709                 dev_kfree_skb_any(skb);
4710                 credits++;
4711         }
4712
4713         if (credits && netif_queue_stopped(rocker_port->dev))
4714                 netif_wake_queue(rocker_port->dev);
4715
4716         napi_complete(napi);
4717         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4718
4719         return 0;
4720 }
4721
4722 static int rocker_port_rx_proc(const struct rocker *rocker,
4723                                const struct rocker_port *rocker_port,
4724                                struct rocker_desc_info *desc_info)
4725 {
4726         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4727         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4728         size_t rx_len;
4729
4730         if (!skb)
4731                 return -ENOENT;
4732
4733         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4734         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4735                 return -EINVAL;
4736
4737         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4738
4739         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4740         skb_put(skb, rx_len);
4741         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4742
4743         rocker_port->dev->stats.rx_packets++;
4744         rocker_port->dev->stats.rx_bytes += skb->len;
4745
4746         netif_receive_skb(skb);
4747
4748         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4749 }
4750
4751 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4752 {
4753         return container_of(napi, struct rocker_port, napi_rx);
4754 }
4755
4756 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4757 {
4758         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4759         const struct rocker *rocker = rocker_port->rocker;
4760         struct rocker_desc_info *desc_info;
4761         u32 credits = 0;
4762         int err;
4763
4764         /* Process rx descriptors */
4765         while (credits < budget &&
4766                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4767                 err = rocker_desc_err(desc_info);
4768                 if (err) {
4769                         if (net_ratelimit())
4770                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4771                                            err);
4772                 } else {
4773                         err = rocker_port_rx_proc(rocker, rocker_port,
4774                                                   desc_info);
4775                         if (err && net_ratelimit())
4776                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4777                                            err);
4778                 }
4779                 if (err)
4780                         rocker_port->dev->stats.rx_errors++;
4781
4782                 rocker_desc_gen_clear(desc_info);
4783                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4784                 credits++;
4785         }
4786
4787         if (credits < budget)
4788                 napi_complete(napi);
4789
4790         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4791
4792         return credits;
4793 }
4794
4795 /*****************
4796  * PCI driver ops
4797  *****************/
4798
4799 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4800 {
4801         const struct rocker *rocker = rocker_port->rocker;
4802         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4803         bool link_up;
4804
4805         link_up = link_status & (1 << rocker_port->pport);
4806         if (link_up)
4807                 netif_carrier_on(rocker_port->dev);
4808         else
4809                 netif_carrier_off(rocker_port->dev);
4810 }
4811
4812 static void rocker_remove_ports(const struct rocker *rocker)
4813 {
4814         struct rocker_port *rocker_port;
4815         int i;
4816
4817         for (i = 0; i < rocker->port_count; i++) {
4818                 rocker_port = rocker->ports[i];
4819                 if (!rocker_port)
4820                         continue;
4821                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4822                                    ROCKER_OP_FLAG_REMOVE);
4823                 unregister_netdev(rocker_port->dev);
4824                 free_netdev(rocker_port->dev);
4825         }
4826         kfree(rocker->ports);
4827 }
4828
4829 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4830 {
4831         const struct rocker *rocker = rocker_port->rocker;
4832         const struct pci_dev *pdev = rocker->pdev;
4833         int err;
4834
4835         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4836                                                    rocker_port->dev->dev_addr);
4837         if (err) {
4838                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4839                 eth_hw_addr_random(rocker_port->dev);
4840         }
4841 }
4842
4843 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4844 {
4845         const struct pci_dev *pdev = rocker->pdev;
4846         struct rocker_port *rocker_port;
4847         struct net_device *dev;
4848         u16 untagged_vid = 0;
4849         int err;
4850
4851         dev = alloc_etherdev(sizeof(struct rocker_port));
4852         if (!dev)
4853                 return -ENOMEM;
4854         rocker_port = netdev_priv(dev);
4855         rocker_port->dev = dev;
4856         rocker_port->rocker = rocker;
4857         rocker_port->port_number = port_number;
4858         rocker_port->pport = port_number + 1;
4859         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4860         INIT_LIST_HEAD(&rocker_port->trans_mem);
4861
4862         rocker_port_dev_addr_init(rocker_port);
4863         dev->netdev_ops = &rocker_port_netdev_ops;
4864         dev->ethtool_ops = &rocker_port_ethtool_ops;
4865         dev->switchdev_ops = &rocker_port_switchdev_ops;
4866         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4867                        NAPI_POLL_WEIGHT);
4868         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4869                        NAPI_POLL_WEIGHT);
4870         rocker_carrier_init(rocker_port);
4871
4872         dev->features |= NETIF_F_NETNS_LOCAL;
4873
4874         err = register_netdev(dev);
4875         if (err) {
4876                 dev_err(&pdev->dev, "register_netdev failed\n");
4877                 goto err_register_netdev;
4878         }
4879         rocker->ports[port_number] = rocker_port;
4880
4881         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4882
4883         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4884         if (err) {
4885                 dev_err(&pdev->dev, "install ig port table failed\n");
4886                 goto err_port_ig_tbl;
4887         }
4888
4889         rocker_port->internal_vlan_id =
4890                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4891
4892         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
4893                                    untagged_vid, 0);
4894         if (err) {
4895                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
4896                 goto err_untagged_vlan;
4897         }
4898
4899         return 0;
4900
4901 err_untagged_vlan:
4902         rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4903                            ROCKER_OP_FLAG_REMOVE);
4904 err_port_ig_tbl:
4905         unregister_netdev(dev);
4906 err_register_netdev:
4907         free_netdev(dev);
4908         return err;
4909 }
4910
4911 static int rocker_probe_ports(struct rocker *rocker)
4912 {
4913         int i;
4914         size_t alloc_size;
4915         int err;
4916
4917         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4918         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
4919         if (!rocker->ports)
4920                 return -ENOMEM;
4921         for (i = 0; i < rocker->port_count; i++) {
4922                 err = rocker_probe_port(rocker, i);
4923                 if (err)
4924                         goto remove_ports;
4925         }
4926         return 0;
4927
4928 remove_ports:
4929         rocker_remove_ports(rocker);
4930         return err;
4931 }
4932
4933 static int rocker_msix_init(struct rocker *rocker)
4934 {
4935         struct pci_dev *pdev = rocker->pdev;
4936         int msix_entries;
4937         int i;
4938         int err;
4939
4940         msix_entries = pci_msix_vec_count(pdev);
4941         if (msix_entries < 0)
4942                 return msix_entries;
4943
4944         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4945                 return -EINVAL;
4946
4947         rocker->msix_entries = kmalloc_array(msix_entries,
4948                                              sizeof(struct msix_entry),
4949                                              GFP_KERNEL);
4950         if (!rocker->msix_entries)
4951                 return -ENOMEM;
4952
4953         for (i = 0; i < msix_entries; i++)
4954                 rocker->msix_entries[i].entry = i;
4955
4956         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4957         if (err < 0)
4958                 goto err_enable_msix;
4959
4960         return 0;
4961
4962 err_enable_msix:
4963         kfree(rocker->msix_entries);
4964         return err;
4965 }
4966
4967 static void rocker_msix_fini(const struct rocker *rocker)
4968 {
4969         pci_disable_msix(rocker->pdev);
4970         kfree(rocker->msix_entries);
4971 }
4972
4973 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4974 {
4975         struct rocker *rocker;
4976         int err;
4977
4978         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4979         if (!rocker)
4980                 return -ENOMEM;
4981
4982         err = pci_enable_device(pdev);
4983         if (err) {
4984                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4985                 goto err_pci_enable_device;
4986         }
4987
4988         err = pci_request_regions(pdev, rocker_driver_name);
4989         if (err) {
4990                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4991                 goto err_pci_request_regions;
4992         }
4993
4994         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4995         if (!err) {
4996                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4997                 if (err) {
4998                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4999                         goto err_pci_set_dma_mask;
5000                 }
5001         } else {
5002                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5003                 if (err) {
5004                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5005                         goto err_pci_set_dma_mask;
5006                 }
5007         }
5008
5009         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5010                 dev_err(&pdev->dev, "invalid PCI region size\n");
5011                 err = -EINVAL;
5012                 goto err_pci_resource_len_check;
5013         }
5014
5015         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5016                                   pci_resource_len(pdev, 0));
5017         if (!rocker->hw_addr) {
5018                 dev_err(&pdev->dev, "ioremap failed\n");
5019                 err = -EIO;
5020                 goto err_ioremap;
5021         }
5022         pci_set_master(pdev);
5023
5024         rocker->pdev = pdev;
5025         pci_set_drvdata(pdev, rocker);
5026
5027         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5028
5029         err = rocker_msix_init(rocker);
5030         if (err) {
5031                 dev_err(&pdev->dev, "MSI-X init failed\n");
5032                 goto err_msix_init;
5033         }
5034
5035         err = rocker_basic_hw_test(rocker);
5036         if (err) {
5037                 dev_err(&pdev->dev, "basic hw test failed\n");
5038                 goto err_basic_hw_test;
5039         }
5040
5041         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5042
5043         err = rocker_dma_rings_init(rocker);
5044         if (err)
5045                 goto err_dma_rings_init;
5046
5047         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5048                           rocker_cmd_irq_handler, 0,
5049                           rocker_driver_name, rocker);
5050         if (err) {
5051                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5052                 goto err_request_cmd_irq;
5053         }
5054
5055         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5056                           rocker_event_irq_handler, 0,
5057                           rocker_driver_name, rocker);
5058         if (err) {
5059                 dev_err(&pdev->dev, "cannot assign event irq\n");
5060                 goto err_request_event_irq;
5061         }
5062
5063         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5064
5065         err = rocker_init_tbls(rocker);
5066         if (err) {
5067                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5068                 goto err_init_tbls;
5069         }
5070
5071         err = rocker_probe_ports(rocker);
5072         if (err) {
5073                 dev_err(&pdev->dev, "failed to probe ports\n");
5074                 goto err_probe_ports;
5075         }
5076
5077         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5078
5079         return 0;
5080
5081 err_probe_ports:
5082         rocker_free_tbls(rocker);
5083 err_init_tbls:
5084         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5085 err_request_event_irq:
5086         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5087 err_request_cmd_irq:
5088         rocker_dma_rings_fini(rocker);
5089 err_dma_rings_init:
5090 err_basic_hw_test:
5091         rocker_msix_fini(rocker);
5092 err_msix_init:
5093         iounmap(rocker->hw_addr);
5094 err_ioremap:
5095 err_pci_resource_len_check:
5096 err_pci_set_dma_mask:
5097         pci_release_regions(pdev);
5098 err_pci_request_regions:
5099         pci_disable_device(pdev);
5100 err_pci_enable_device:
5101         kfree(rocker);
5102         return err;
5103 }
5104
5105 static void rocker_remove(struct pci_dev *pdev)
5106 {
5107         struct rocker *rocker = pci_get_drvdata(pdev);
5108
5109         rocker_free_tbls(rocker);
5110         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5111         rocker_remove_ports(rocker);
5112         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5113         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5114         rocker_dma_rings_fini(rocker);
5115         rocker_msix_fini(rocker);
5116         iounmap(rocker->hw_addr);
5117         pci_release_regions(rocker->pdev);
5118         pci_disable_device(rocker->pdev);
5119         kfree(rocker);
5120 }
5121
5122 static struct pci_driver rocker_pci_driver = {
5123         .name           = rocker_driver_name,
5124         .id_table       = rocker_pci_id_table,
5125         .probe          = rocker_probe,
5126         .remove         = rocker_remove,
5127 };
5128
5129 /************************************
5130  * Net device notifier event handler
5131  ************************************/
5132
5133 static bool rocker_port_dev_check(const struct net_device *dev)
5134 {
5135         return dev->netdev_ops == &rocker_port_netdev_ops;
5136 }
5137
5138 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5139                                    struct net_device *bridge)
5140 {
5141         u16 untagged_vid = 0;
5142         int err;
5143
5144         /* Port is joining bridge, so the internal VLAN for the
5145          * port is going to change to the bridge internal VLAN.
5146          * Let's remove untagged VLAN (vid=0) from port and
5147          * re-add once internal VLAN has changed.
5148          */
5149
5150         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5151         if (err)
5152                 return err;
5153
5154         rocker_port_internal_vlan_id_put(rocker_port,
5155                                          rocker_port->dev->ifindex);
5156         rocker_port->internal_vlan_id =
5157                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5158
5159         rocker_port->bridge_dev = bridge;
5160
5161         return rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5162                                     untagged_vid, 0);
5163 }
5164
5165 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5166 {
5167         u16 untagged_vid = 0;
5168         int err;
5169
5170         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5171         if (err)
5172                 return err;
5173
5174         rocker_port_internal_vlan_id_put(rocker_port,
5175                                          rocker_port->bridge_dev->ifindex);
5176         rocker_port->internal_vlan_id =
5177                 rocker_port_internal_vlan_id_get(rocker_port,
5178                                                  rocker_port->dev->ifindex);
5179
5180         rocker_port->bridge_dev = NULL;
5181
5182         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5183                                    untagged_vid, 0);
5184         if (err)
5185                 return err;
5186
5187         if (rocker_port->dev->flags & IFF_UP)
5188                 err = rocker_port_fwd_enable(rocker_port,
5189                                              SWITCHDEV_TRANS_NONE, 0);
5190
5191         return err;
5192 }
5193
5194 static int rocker_port_master_changed(struct net_device *dev)
5195 {
5196         struct rocker_port *rocker_port = netdev_priv(dev);
5197         struct net_device *master = netdev_master_upper_dev_get(dev);
5198         int err = 0;
5199
5200         /* There are currently three cases handled here:
5201          * 1. Joining a bridge
5202          * 2. Leaving a previously joined bridge
5203          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
5204          *    in which case nothing is done
5205          */
5206         if (master && master->rtnl_link_ops &&
5207             !strcmp(master->rtnl_link_ops->kind, "bridge"))
5208                 err = rocker_port_bridge_join(rocker_port, master);
5209         else if (rocker_port_is_bridged(rocker_port))
5210                 err = rocker_port_bridge_leave(rocker_port);
5211
5212         return err;
5213 }
5214
5215 static int rocker_netdevice_event(struct notifier_block *unused,
5216                                   unsigned long event, void *ptr)
5217 {
5218         struct net_device *dev;
5219         int err;
5220
5221         switch (event) {
5222         case NETDEV_CHANGEUPPER:
5223                 dev = netdev_notifier_info_to_dev(ptr);
5224                 if (!rocker_port_dev_check(dev))
5225                         return NOTIFY_DONE;
5226                 err = rocker_port_master_changed(dev);
5227                 if (err)
5228                         netdev_warn(dev,
5229                                     "failed to reflect master change (err %d)\n",
5230                                     err);
5231                 break;
5232         }
5233
5234         return NOTIFY_DONE;
5235 }
5236
5237 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5238         .notifier_call = rocker_netdevice_event,
5239 };
5240
5241 /************************************
5242  * Net event notifier event handler
5243  ************************************/
5244
5245 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5246 {
5247         struct rocker_port *rocker_port = netdev_priv(dev);
5248         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5249                     ROCKER_OP_FLAG_NOWAIT;
5250         __be32 ip_addr = *(__be32 *)n->primary_key;
5251
5252         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5253                                       flags, ip_addr, n->ha);
5254 }
5255
5256 static int rocker_netevent_event(struct notifier_block *unused,
5257                                  unsigned long event, void *ptr)
5258 {
5259         struct net_device *dev;
5260         struct neighbour *n = ptr;
5261         int err;
5262
5263         switch (event) {
5264         case NETEVENT_NEIGH_UPDATE:
5265                 if (n->tbl != &arp_tbl)
5266                         return NOTIFY_DONE;
5267                 dev = n->dev;
5268                 if (!rocker_port_dev_check(dev))
5269                         return NOTIFY_DONE;
5270                 err = rocker_neigh_update(dev, n);
5271                 if (err)
5272                         netdev_warn(dev,
5273                                     "failed to handle neigh update (err %d)\n",
5274                                     err);
5275                 break;
5276         }
5277
5278         return NOTIFY_DONE;
5279 }
5280
5281 static struct notifier_block rocker_netevent_nb __read_mostly = {
5282         .notifier_call = rocker_netevent_event,
5283 };
5284
5285 /***********************
5286  * Module init and exit
5287  ***********************/
5288
5289 static int __init rocker_module_init(void)
5290 {
5291         int err;
5292
5293         register_netdevice_notifier(&rocker_netdevice_nb);
5294         register_netevent_notifier(&rocker_netevent_nb);
5295         err = pci_register_driver(&rocker_pci_driver);
5296         if (err)
5297                 goto err_pci_register_driver;
5298         return 0;
5299
5300 err_pci_register_driver:
5301         unregister_netevent_notifier(&rocker_netevent_nb);
5302         unregister_netdevice_notifier(&rocker_netdevice_nb);
5303         return err;
5304 }
5305
5306 static void __exit rocker_module_exit(void)
5307 {
5308         unregister_netevent_notifier(&rocker_netevent_nb);
5309         unregister_netdevice_notifier(&rocker_netdevice_nb);
5310         pci_unregister_driver(&rocker_pci_driver);
5311 }
5312
5313 module_init(rocker_module_init);
5314 module_exit(rocker_module_exit);
5315
5316 MODULE_LICENSE("GPL v2");
5317 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5318 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5319 MODULE_DESCRIPTION("Rocker switch device driver");
5320 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);